Our second fall event is free and open to everyone: a live pond tank aquascape demo with Pascal Reyes at Walter Andersen Nursery in Point Loma. No ticket, no sign up — just show up.

Pond Tank Aquascape Demo with Pascal Reyes

Pascal Reyes, aquascaper and fishkeeper, will build a pond tank aquascape start to finish while walking through how it comes together. Expect design tips, plant selection, and plenty of time for questions as the layout takes shape.

A pond tank is a shallow, open-top planted aquascape — the kind of low-maintenance layout that works beautifully on a patio table or in a bright corner of a room. It is one of the most approachable ways into aquatic gardening.

What You Will See

• How to build a balanced, natural layout with driftwood, stone, and live plants
• Plant selection for a shallow, low-maintenance pond aquascape
• Design tips you can take straight home to your own setup
• Q&A with Pascal throughout the demo

Event Details

Event: Pond Tank Aquascape Demo with Pascal Reyes
Date: Saturday, November 14, 2026
Time: 8:30 AM – 9:30 AM
Location: Walter Andersen Nursery — Point Loma, 3642 Enterprise St, San Diego, CA 92110
Price: Free — no sign up required
Who it is for: Open to the public, all are welcome

Come Early, Stay Inspired

Walter Andersen Nursery is worth the trip on its own, so come early and wander the grounds before the demo starts. Bring your questions — the format is built around them.

Event details and updates: Pond Tank Aquascape Demo on Facebook.

For plants, hardscape, and aquascaping supplies, visit either Pet Zone Tropical Fish location in San Diego.

Two upcoming events, one paid and one free, are open to the San Diego aquascaping community this fall. Here is the first: a hands-on Classic Nature aquascaping class where you build a planted nano aquarium and take it home the same night.

Classic Nature Aquascaping Class at Citizen Brewers

Join the PetZoneSD team at Citizen Brewers in Mission Valley for a hands-on class exploring Classic and Nature style aquascaping. We will cover the fundamentals — composition, balance, scale, and plant selection — and then you will build your own layout with driftwood, stone, and live plants while we answer questions throughout.

This is a real build, not a lecture. Everyone leaves with a finished planted nano aquarium.

What Is Included

• Glass nano tank, 1–1.5 gallon — yours to keep
• Aquasoil substrate
• Hardscape — driftwood and stone
• Live aquarium plants
• One hour of hands-on instruction from the PetZoneSD team

Event Details

Event: Classic Nature Aquascaping Class
Date: Saturday, October 10, 2026
Start Time: 6:00 PM
Location: Citizen Brewers — Mission Valley, San Diego
Price: $129.99 per person
Seats: Limited to 10
Who it is for: Open to the public, all skill levels

No Experience Needed

Beginners are genuinely welcome here. If you have never planted a tank before, this is a good first one to do with someone standing next to you. Experienced hobbyists usually pick up a trick or two as well, especially around layout and plant placement.

Reserve Your Seat

Seating is limited to 10, so reserve early: book the Classic Nature Aquascaping Class.

Looking for plants, hardscape, or aquascaping supplies before or after class? Stop by either Pet Zone Tropical Fish location in San Diego.

Five shipments landed at our two San Diego stores this week, and it is one of the deepest restocks we have had all year. The shrimp wall is completely full again, the plant wall is the best it has looked in a long time, and there is a bichir on the floor we almost never get.

What landed this week:

• 18 freshwater shrimp color lines — Neocaridina, Rili, Caridina and Amano
• Seven Bucephalandra varieties across two plant orders
• Ten Anubias varieties, tissue culture and loose, including Pinto
• Cryptocoryne Flamingo and Rotala “Orange Juice”
• Ansorge’s Bichir, dwarf puffers and UFO hillstream loaches
• Live blackworms, in and for sale

Here is everything that came in.

Freshwater Shrimp: 18 Color Lines on the Wall

If you have been putting off starting a shrimp tank, this is the week to come in. Eighteen distinct color lines landed in one drop, and the freshwater shrimp wall has not been this full in months.

Neocaridina davidi

Fire Red · Orange Eye Fire Red · Bloody Mary · Cherry · Sunkist · Blue Dream · Blue Velvet · Green Jade · Yellow Back · Golden Dust · Snowball · Snow White · Black Rose · Calico.

Rili

Black Rili and Blue Carbon Rili — the split-colour pattern, clear mid-body with pigment at both ends.

Caridina

Crystal Red and Crystal Black.

Amano

Amano shrimp (Caridina multidentata) are back too. They remain the most useful algae crew you can put in a planted tank, and they will not crossbreed with anything else on this list.

Starting out? Neocaridina are the easier entry point. They tolerate a wider parameter range than Caridina and breed readily in a stable, established tank, while Crystal Reds and Blacks want softer, more acidic water and more patience. Keep one Neocaridina colour line per tank if you want the colour to stay true — mixed lines revert toward wild brown within a few generations. Bring us your parameters and we will tell you which of these will actually thrive in your setup.

Aquarium Plants: Two Orders, the Deepest Wall of the Year

We took delivery of two separate aquarium plant orders this week. Between them, this is the widest plant selection we have carried in a long time.

Bucephalandra — seven varieties

Sekadau Giant Blue · Mini Coin · Pink Lady · Brownie “Ghost” · Brownie “Purple” · Kedakang · sp. “Green”.

Seven varieties on the wall at once is unusual for us, and Buce moves quickly. Come see them side by side while you still can — the colour differences between Brownie Ghost and Sekadau Giant Blue are far more obvious in person than in any photo.

Buce is a rhizome plant, so it attaches to hardscape the same way Anubias does: tie or glue the rhizome to stone or wood and never bury it. It is slow-growing, low-light, forgiving of a beginner’s mistakes, and it is the single best way to make new hardscape look established.

Anubias — the full range

Pinto · Nana · Nana “Golden” · Nana “Variegated” · “Petite” · Nangi · Barteri “Round Leaf” · Coffeefolia · Wrinkled · Congensis. Tissue culture and loose, small through large.

Anubias Pinto is the one to look at first — the white marbling is genuine variegation, not a light artefact, and it does not usually sit on our shelf for long.

Cryptocoryne

Flamingo, Balansae and Thwaitesii Kirindoya Brown. The Flamingo arrived in a small batch. It is a slow grower with genuinely pink new leaves, and it does not stay in stock. Crypts sulk and melt when they are moved — that is normal, not a dead plant. Leave the roots alone and the new growth comes back adapted to your water.

Carpeting and foreground plants

HC “Cuba” (Micranthemum callitrichoides) · Utricularia graminifolia · Dwarf Hairgrass · Hairgrass “Mini” · Micro Sword · Staurogyne repens · Downoi (Pogostemon helferi) · Pearlweed.

Deciding between HC and UG for a first carpet? They want quite different things — UG is slower to establish but far more forgiving once it takes, while HC wants strong light and CO2 to stay flat instead of climbing. Our Aquarium Plants 101 guide walks through the difference, or ask us in the shop.

Red stems

Rotala “Orange Juice” · Rotala Wallichii · Rotala Bossii · Rotala Macrandra Mini · Ludwigia “Mini Super Red” · Ludwigia “Red” · Ludwigia inclinata “White Edge” · Ludwigia Repens and Broadleaf · Ludwigia peruensis “Glandulosa” · Ludwigia Sedioides · Alternanthera Reineckii in standard, “Mini”, “Scarlet Temple” and Rosaefolia · Alternanthera Lilacina.

Rotala “Orange Juice” is the standout of the group. Under strong light the new growth comes in genuinely orange rather than pink-red, and it is the fastest way to get a warm colour block into a green scape.

Green stems and background

Bacopa Salzmanni Purple · Limnophila Aromatica Mini · Limnophila rugosa · Heteranthera Zosterifolia · Ammannia (Nesaea Crassicaulis) · Mayaca Fluviatilis · Hygrophila “Wisteria” · Nomaphila Stricta · Dwarf Hygrophila Corymbosa Compact · Staurogyne Bihar.

Ferns, epiphytes, moss and floaters

Java Fern in Narrow Leaf, Trident and Narrow Mini · Bolbitis “Asian Water Fern” · Mini Bolbitis baby leaf · Java Moss by the half pound · Vallisneria Corkscrew and Spiralis · Red Root Floater · Riccia fluitans · Hydrocotyle verticillata · Lysimachia nummularia · Schismatoglottis prietoi · Aponogeton Natans · straight Bamboo.

Running low-tech or no CO2? Java fern, Bolbitis, Anubias, Buce, Vallisneria and moss are the whole toolkit — and they pair well with a soil substrate. Our Ultimate Dirted Tank Guide covers the Walstad-style setup we use in the shop.

Above the waterline

Mondo Grass (Ophiopogon japonicus), Ruby Red Club Moss (Selaginella erythropus) and Purple Waffle (Hemigraphis colorata) also came in. These are not fully aquatic. They belong in paludariums, ripariums and terrariums, above the waterline — submerge them and they rot.

Tropical Fish

The rare one: Ansorge’s Bichir

Ansorge’s Bichir (Polypterus ansorgii), also sold as the Guinean Bichir, at around three inches. We almost never see this species, and only a small batch came in. Bichirs are prehistoric-looking, genuinely personable, and they grow — talk to us about adult tank size and a tight-fitting lid before you commit to one. They are escape artists.

Nano and schooling fish

Neon Tetra · Golden Neon Tetra · White Cloud Minnow, standard and Gold · Rainbow Badis · Longfin Cherry Barb · Tiger Barb · Zebra Danio · Congo Tetra · Orange Rice Fish (Medaka) · Endler Guppy. See everything newest first in tropical fish.

Centerpiece and oddball

Dwarf Puffer (Malabar, also sold as the pea puffer) at about half an inch — the nano tank favourite, and worth knowing up front that they do not cohabit with shrimp. Also in: Wrestling Halfbeak, Discus, Green Terror, Oscar, Blood Parrot, Mono Sebae and Red Honey Gourami, plus African Dwarf Frogs in Blonde and Zaire Platinum.

Bettas and livebearers

Show Quality Betta, Female Betta and assorted. Male and female Guppies, Short-fin Molly and Balloon Molly.

Bottom dwellers and cleanup crew

Otocinclus, Assorted Corydoras, Julii Cory, and the UFO (Reticulated Hillstream) Loach — a flat, fast biofilm grazer that sits right on your hardscape. It is one of the few algae eaters that actually looks like part of the layout instead of a maintenance crew.

Snails and clams

On the invert side: Nerite Snails in Horned Tricolor, Pumpkin Pink and Tiger, plus Golden Rabbit Snails and Yellow Mini Clams. Nerites will not breed in freshwater, which is exactly why they are the safe choice for a display scape.

Live Food

Live blackworms are in and available. They do not ship well, so this is an in-store item only — but if you have picky eaters, wild-caught fish settling in, or you are conditioning a pair, they are worth the trip.

Questions We Get Asked About This Batch

Which shrimp should a beginner start with?

Neocaridina — Cherry, Bloody Mary, Blue Dream or Snowball. They handle San Diego tap parameters better than Caridina and will breed on their own once the tank is stable. Start with one colour line.

Can dwarf puffers live with shrimp?

No. Dwarf puffers hunt snails and small inverts, and adult shrimp are on the menu. Keep them in a species tank and feed them snails and live food.

How do you plant Bucephalandra and Anubias?

You do not plant them. Tie or superglue the rhizome to stone or driftwood and leave it exposed — burying the rhizome in substrate rots the plant. Both are low-light and slow, so they are the safest plants in a new tank.

Do these plants need CO2?

The epiphytes, ferns, mosses, Vallisneria and Crypts do not. The red stems and the carpets — HC, UG, Hairgrass, the Rotalas and Ludwigias — will grow far better with it. See the step-by-step aquascape setup guide for how we build these tanks.

Do you ship, or hold livestock?

Livestock is in-store only, and we do not hold. Fixed pricing for everyone, no promo codes — the early crowd gets the pick.

Come See It in San Diego

Stock varies between our two San Diego locations, so give us a call before you drive out and we will tell you what is where.

Pet Zone Tropical Fish
Kearny Mesa — 4160 Convoy St, San Diego, CA 92111
Mid-City — 4266 University Ave, San Diego, CA
(866) 693-4749 · Hours and directions

We are San Diego’s first aquascape-focused local fish store — a design store, not a pet store. New arrivals land most weeks; the blog and our restock email are the fastest way to see what came in.

Join us Saturday, July 11 and Sunday, July 12, 2026 for a full weekend of aquascaping inspiration, planted tank knowledge, live demos, wabi-kusa tying, hardscape building, raffle giveaways, and community.

Over the years, our anniversary weekends have always been about more than just celebrating another year. They’ve been a way for us to bring hobbyists together, showcase the art of aquascaping, highlight freshwater aquarium culture, and create memorable hands-on experiences for our local San Diego fishkeeping community.

This year, we’re taking it even further.

Tom Barr Live at Pet Zone SD / Hakkai

Tom Barr is one of the most respected names in the planted aquarium and aquascaping world. Many hobbyists know him for his deep knowledge of aquatic plants, plant growth, fertilization, nature-inspired layouts, and his long-standing contributions to the freshwater aquarium hobby.

We’ve had the honor of hosting Tom Barr at past Pet Zone SD anniversary events, and we’re excited to bring him back for another special weekend of education, creativity, and aquascaping inspiration.

Whether you’re brand new to planted tanks or already deep into aquascaping, this is a rare chance to learn, ask questions, watch live builds, and get inspired directly from one of the hobby’s most influential voices.

Event Details

Event: Tom Barr Live at Pet Zone SD: 10-Year Anniversary Aquascape Weekend
Dates: Saturday, July 11 & Sunday, July 12, 2026
Start Time: 12:30 PM both days
Location: Pet Zone SD / Hakkai
More details: Raffle info, specials, and event updates coming soon

Saturday, July 11

Ikebana Philosophy in Aquascaping + Wabi-Kusa Tying

Day one will feature Tom Barr as our guest speaker for a special talk on Ikebana Philosophy in Aquascaping.

This session will explore how ideas from ikebana — balance, space, movement, simplicity, natural flow, and intentional placement — can influence the way we design planted aquariums and nature-inspired layouts.

Aquascaping is more than just placing rocks, wood, and plants into a tank. The best layouts often feel alive before water is even added. They guide the viewer’s eye, create emotion, and tell a story through structure, contrast, and restraint.

Tom will also be tying wabi-kusa, showcasing how aquatic plants can be arranged into living compositions that blend plant care, natural design, and hands-on creativity.

For anyone interested in planted tanks, emersed plant displays, terrarium-style aquascaping, or Japanese-inspired nature art, this will be a fun and inspiring session.

Sunday, July 12

Hardscape Demo + Raffle Giveaway

Day two will focus on the foundation of every great aquascape: hardscape.

Tom Barr will be doing a live hardscape demo/build, covering layout structure, stone and wood placement, flow, balance, and how to create a strong visual foundation before planting begins.

Hardscape is one of the most important parts of aquascaping. It sets the direction for the entire layout and helps determine how plants, open space, depth, and movement will work together once the aquarium grows in.

We’ll also be hosting a raffle giveaway after the demo as part of our anniversary celebration. More raffle details will be announced as we get closer to the event.

Celebrating 10 Years of Aquascaping, Fishkeeping & Community

This weekend is special for us.

From freshwater fish and aquarium plants to aquascape workshops, live demos, hardscape displays, rare livestock, and the growth of Hakkai, the last 10 years have been shaped by the hobbyists who continue to support us.

Our goal has always been to create a space where aquarists can discover new ideas, learn from experienced hobbyists, connect with the community, and get inspired for their next aquarium.

Hosting Tom Barr again for our 10-Year Anniversary Weekend feels like the perfect way to celebrate that journey.

Whether you’re coming for the planted tank knowledge, the aquascape demos, the wabi-kusa tying, the hardscape build, the raffle, or just to hang out with fellow fish nerds — we’d love to see you there.

Mark Your Calendars

Tom Barr Live at Pet Zone SD / Hakkai
10-Year Anniversary Aquascape Weekend
Saturday, July 11 & Sunday, July 12, 2026
Starts at 12:30 PM both days

More event details, raffle info, and anniversary specials will be announced soon.

Come celebrate with us, learn something new, and get inspired for your next aquascape.

Like many of our neighbors, we are heartbroken by the tragic shooting that took place here in San Diego. Our deepest condolences are with the families of those whose lives were taken, everyone injured, and all those affected by this devastating act of violence.

San Diego is home to people from many different backgrounds, cultures, faiths, and walks of life. That diversity is part of what makes our city so special. As a local business, we are grateful every day to serve a community made up of so many different people, families, and stories.

Pet Zone SD is made up of people from many backgrounds, cultures, and beliefs, and we believe San Diego is strongest when we show up for one another with kindness, respect, and compassion. Any act of hate or violence against any community has no place in our city.

In moments like this, words can feel small. But we still believe it is important to say clearly: we stand with our San Diego community. We grieve with those who are grieving. We mourn with those who are hurting. And we hope for healing, strength, and peace for everyone impacted.

To our customers, neighbors, friends, and fellow San Diegans: please take care of one another. Check in on your loved ones. Lead with compassion. And let us continue to build a community where everyone feels safe, welcomed, and valued.

With love and solidarity,
The Pet Zone Tropical Fish Team

Some fish are pretty. Some fish are interesting. And then there are fish that feel like they belong in a rushing mountain river, powering through current with big scales, strong bodies, and that unmistakable “river monster” energy.

That is exactly why mahseer are such exciting fish for advanced freshwater hobbyists.

At Pet Zone SD, we currently have two incredible mahseer-type species available online: the Gold Mahseer, also called Golden Mahseer, Putitor Mahseer, or Himalayan Mahseer — Tor putitora — and the Blue Mahseer, also known as Blue Mahseer Barb, Stracheyi Mahseer, Blue Tor, Waterfall Carp, or Pla Puang — Neolissochilus stracheyi. Both are powerful, large-growing freshwater fish with serious presence, but each brings a slightly different look and vibe to the aquarium.

What Makes Mahseer So Cool?

Mahseer are part of the carp and barb family, but these are not your average community fish. These are athletic, river-dwelling fish built for movement, oxygen-rich water, and open swimming space. In nature, mahseer are often associated with streams, river pools, rocky bottoms, and fast-moving freshwater systems.

For hobbyists who love big, active fish, mahseer offer something really special. They have the schooling, cruising energy of barbs, the power and scale size of large river fish, and the long-term potential to become true centerpiece animals in a large aquarium or indoor pond-style setup.

These are not nano tank fish. They are best suited for experienced keepers who can provide strong filtration, clean water, plenty of swimming room, and a long-term plan.

Gold Mahseer: The Golden River Legend

The Gold Mahseer — Tor putitora — is one of the most iconic mahseer species in the world. Also known as the Golden Mahseer, Putitor Mahseer, or Himalayan Mahseer, this fish is famous for its bold scales, powerful body shape, and golden-bronze coloration.

Young Gold Mahseer already have that classic strong-bodied look, but as they grow, they develop into stunning, thick-bodied river fish with a warm metallic glow. Their coloration can range from gold to bronze depending on age, lighting, diet, and condition.

In the aquarium, the Gold Mahseer is a great choice for hobbyists who appreciate natural-looking monster fish. It does not rely on flashy artificial colors or exaggerated features. Its beauty comes from its strength, scale texture, movement, and that ancient river-fish look.

This species is best for large aquariums, monster fish communities, or indoor pond-style systems where it has room to cruise. Give it clean, well-oxygenated water, strong filtration, and a varied diet, and it can become an absolute showpiece.

Interested in keeping this legendary species?
Shop the Gold Mahseer / Golden Mahseer here:
https://petzonesd.com/gold-mahseer-golden-mahseer-tor-putitora/

Blue Mahseer: The Sleek, Rare River Barb

The Blue Mahseer — Neolissochilus stracheyi — brings a different kind of beauty. Also sold as the Blue Mahseer Barb, Stracheyi Mahseer, Blue Tor, Waterfall Carp, or Pla Puang, this species is known for its streamlined body, reflective scales, and blue-toned sheen that becomes more noticeable as it matures.

Compared to the Gold Mahseer, the Blue Mahseer has a cooler, sleeker look. It has that “fast river fish” appearance, with a strong body built for current and movement. Under the right lighting, the blue tones across the scales can really stand out, especially as the fish settles in and grows.

FishBase lists Neolissochilus stracheyi from Southeast Asian river systems, including areas through Myanmar and Thailand, with records from Salween, Maeklong, Chao Phraya, Mekong, and other regional systems.

For monster fish keepers who want something different from the usual arowana, bichir, datnoid, or peacock bass conversation, the Blue Mahseer is a very cool alternative. It is active, uncommon, and has a wild river-species charm that really fits natural-style large aquariums.

Want something rare with serious river-fish energy?
Shop the Blue Mahseer / Blue Mahseer Barb here:
https://petzonesd.com/blue-mahseer-blue-mahseer-barb-neolissochilus-stracheyi/

Gold Mahseer vs. Blue Mahseer: Which One Should You Choose?

Both species are awesome, but they have slightly different appeal.

Choose the Gold Mahseer if you want a classic, legendary mahseer with warm golden-bronze coloration, a powerful body shape, and a strong connection to Himalayan river fish culture.

Choose the Blue Mahseer if you want something a little more unusual, with a cooler-toned metallic look, sleek movement, and rare Southeast Asian river barb appeal.

Either way, these fish are best for hobbyists who understand that “cute now” can become “massive later.” They need space, oxygen, filtration, and a keeper who is thinking long-term.

Basic Care Notes for Mahseer

Because both species are large, active river fish, they should be kept in spacious aquariums or indoor pond-style setups. Strong filtration is highly recommended, along with good water movement and high oxygen levels.

A varied diet is important. Mahseer are generally omnivorous, and the Gold Mahseer in particular is documented feeding on a mix of animal and plant-based foods in nature. In captivity, quality pellets, frozen foods, and occasional vegetable-based foods can all be part of a balanced feeding routine.

Avoid cramped setups, poor water quality, and weak filtration. These fish are built to move, and they look their best when they have room to swim.

A True Hobbyist Fish

The Gold Mahseer and Blue Mahseer are not fish you see every day. They are for the keeper who wants something bold, active, rare, and full of personality. They bring the feeling of wild rivers into the aquarium and make an incredible addition for serious freshwater fish keepers with the right setup.

Whether you are drawn to the golden power of Tor putitora or the cool blue sheen of Neolissochilus stracheyi, both species offer something special for advanced aquarists.

Ready to add one of these legendary river fish to your collection?

Shop the Gold Mahseer / Golden Mahseer — Tor putitora:
https://petzonesd.com/gold-mahseer-golden-mahseer-tor-putitora/

Shop the Blue Mahseer / Blue Mahseer Barb — Neolissochilus stracheyi:
https://petzonesd.com/blue-mahseer-blue-mahseer-barb-neolissochilus-stracheyi/

Introduction

Adding live plants to an aquarium does more than make it look stunning—it creates a healthier, more stable ecosystem for your fish. Live plants produce oxygen, absorb excess nitrates, and provide natural shelter that reduces stress in fish. If you’ve never kept a planted tank before, getting started is easier than you think.

Step 1: Choose the Right Tank and Substrate

• Tank Size: For beginners, a 10- to 20-gallon tank is ideal. Larger volumes of water are more forgiving of water parameter fluctuations.
• Substrate: While standard gravel works for plants that feed through the water column, plants with root systems (like Cryptocoryne or Amazon Swords) thrive in nutrient-rich plant substrates or aqua-soils. Alternatively, you can use root tabs under standard gravel.

Step 2: Lighting & Equipment Essentials

• Lighting: Most beginner plants require low-to-medium full-spectrum LED lighting. Keep lights on a 6- to 8-hour daily schedule using a timer to prevent runaway algae growth.
• Filtration: A gentle hang-on-back (HOB) or sponge filter works wonderfully without blowing your plants around.
• Heater: Most tropical fish and plants thrive between 74°F and 78°F (23°C–26°C).

Step 3: Best Beginner-Friendly Plants

Start with undemanding species that do not require CO₂ injection:

• Anubias & Java Fern: Extremely hardy; attach their rhizomes to driftwood or rocks rather than burying them in substrate.
• Java Moss: Great for decorating hardscapes and providing grazing grounds for baby fish and shrimp.
• Amazon Sword: A classic background plant that grows large and lush.

Step 4: Maintenance & Care Routine

• Water Changes: Perform a 20–25% water change weekly.
• Liquid Fertilizer: Dose an all-in-one liquid aquarium plant fertilizer once a week after water changes.
• Pruning: Trim dead or decaying leaves promptly to keep the water clean and encourage new growth.

What makes this fish so fun is the balance it brings to an aquarium. The Red Tail Penguin Tetra has the active, midwater movement people love in schooling fish, but it also keeps a peaceful temperament that works well in planted tanks and calm community setups. Like other penguin-type tetras, it does best in a group, and most care references recommend keeping at least 5–6, with larger groups showing even better confidence and more natural behavior.

If you’re building a tank around them, think open swimming space in the middle with plants, wood, and cover around the edges. That kind of layout lets them school comfortably while still feeling secure. Slightly subdued lighting can help them look their best, and a stable, mature tank will always beat chasing exact numbers. Care guides for penguin tetras generally place them in a broad, beginner-friendly range, with temperatures around the low-to-upper 70s °F and slightly acidic to neutral water working well. For tank size, hobby references commonly land around 15–20 gallons minimum, with bigger tanks being even better for a proper group.

Feeding is easy, which is another reason these fish are such a nice choice. In nature, related penguin tetras feed on small invertebrates like worms, insects, and crustaceans, and in the aquarium they readily accept quality flakes, micro pellets, frozen foods, and small live foods. A varied diet helps keep them active, healthy, and looking sharp. In other words: they are not the kind of fish that make feeding time complicated.

Tankmate-wise, this is where the Red Tail Penguin Tetra really shines. They pair nicely with other peaceful community fish like small tetras, rasboras, Corydoras, dwarf cichlids, and other calm species that won’t bully them or outcompete them. The goal is a tank that feels lively, not chaotic. If your aquarium leans planted, natural, and community-focused, these fish fit right in.

At the end of the day, the Red Tail Penguin Tetra is one of those fish that feels familiar and fresh at the same time. It has the easygoing charm that makes penguin tetras popular in the first place, but the red tail gives it that extra pop that makes people stop and look twice. For hobbyists who want a peaceful schooling fish with movement, contrast, and just a little bit of flair, this one is a seriously fun addition to the tank.

The Sterbai Cory, also known as Corydoras sterbai, is a peaceful and hardy freshwater catfish that is highly popular among aquarists for its distinctive appearance and calm temperament. Native to slow-moving rivers and tributaries in South America, this bottom-dwelling species is ideal for community tanks and planted aquariums.

Appearance and Coloration

Sterbai Corys have a short, stocky body covered in a unique pattern of white spots on a dark brown to black background. Their pectoral and dorsal fins are adorned with fine markings, adding to their visual appeal. They have a downturned mouth with barbels used for searching food along the substrate. Adults typically reach about two and a half inches in length, making them suitable for small to medium aquariums.

Tank Size and Setup

A minimum tank size of 20 gallons is recommended for a small group of Sterbai Corys. They are social fish that do best in groups of at least six, which encourages natural schooling behavior. A soft sandy substrate is ideal to prevent damage to their sensitive barbels. Adding smooth rocks, driftwood, and live plants creates hiding spots and mimics their natural environment.

Water Parameters

Sterbai Corys are adaptable but thrive in stable water conditions. Ideal temperature ranges from 73 to 79 degrees Fahrenheit. They prefer slightly acidic to neutral water with soft to moderate hardness. Regular water changes and clean filtration are essential to keep these bottom dwellers healthy and active.

Diet and Feeding

Sterbai Corys are omnivorous bottom feeders. They consume sinking pellets, wafers, and flakes as staples. Their diet can be supplemented with live or frozen foods such as bloodworms, brine shrimp, and daphnia. Feeding once or twice daily in small amounts ensures all members of the school receive adequate nutrition.

Temperament and Behavior

Sterbai Corys are peaceful, social, and non-aggressive. They spend most of their time scavenging along the bottom for food and interacting with other Corydoras in the group. Their calm nature makes them excellent tank mates for small, peaceful fish, and they add lively activity to the lower levels of the aquarium.

Tank Mates

Ideal companions include small tetras, rasboras, guppies, dwarf gouramis, and other peaceful community fish. Avoid aggressive or large predatory species that may harass or harm them. Keeping them in schools enhances their confidence and overall behavior.

Breeding Information

Breeding Sterbai Corys is possible in well-maintained aquariums. They are egg layers and prefer to deposit eggs on broad leaves, glass, or smooth surfaces. Adults may guard the eggs but it is often recommended to remove the parents to prevent accidental eating of the eggs. Fry are small and require fine foods such as powdered fry food or infusoria.

Conclusion

The Sterbai Cory is an excellent choice for aquarists looking for a peaceful, visually striking, and active bottom-dwelling fish. Its unique spotted pattern, gentle temperament, and schooling behavior make it ideal for community and planted aquariums. With proper care, stable water, and suitable tank mates, Sterbai Corys thrive and bring life and interest to the lower levels of any freshwater tank.