The Transparent Wonder: Indian Glassfish

When it comes to freshwater aquarium fish, few are as intriguing and ethereal as the Indian Glassfish. With a body that’s nearly transparent, this small but captivating species offers a literal window into the fascinating world of aquatic life. Let’s dive into what makes the Indian Glassfish (Parambassis ranga) so special, and why it has found a place in the hearts—and tanks—of aquarists around the world.

What is the Indian Glassfish?

The Indian Glassfish is a small, translucent freshwater fish native to South and Southeast Asia, including India, Bangladesh, and Myanmar. Reaching a maximum size of about 3 inches (7.5 cm), its most striking feature is its nearly transparent body, which allows you to see its bones and internal organs—a trait that gives it a ghostly but beautiful appearance.

It belongs to the Ambassidae family and is often confused with other “glass” species, but Parambassis ranga is the most commonly found in the aquarium trade.

Natural Habitat and Behavior

In the wild, Indian Glassfish are found in slow-moving or still waters like ponds, rivers, and lakes. They prefer areas with dense vegetation and subdued lighting. These are schooling fish, meaning they feel safest and behave more naturally when kept in groups of 5 or more.

In captivity, they are known for being peaceful and shy, doing best in a calm, community tank environment with similarly non-aggressive species.

Tank Requirements and Care

While their care isn't overly complicated, they do have specific needs that must be met for them to thrive:

• Tank size: Minimum of 20 gallons for a small group

• Water temperature: 72–82°F (22–28°C)

• pH: 6.5–7.5

• Water hardness: Soft to moderately hard

• Lighting: Moderate to low (they prefer subdued conditions)

• Tank setup: Plenty of plants, hiding spots, and open swimming space

Diet

Indian Glassfish are carnivorous by nature. In the wild, they feed on tiny invertebrates and insect larvae. In captivity, they’ll eat:

• Live or frozen brine shrimp

• Bloodworms

• Daphnia

• High-quality micro pellets (some individuals are picky eaters)