The Mono Sebae, scientifically known as *Monodactylus sebae*, is a striking brackish water fish that captivates aquarists with its unique appearance and interesting behavior. Native to the coastal and estuarine waters of West Africa and the Indo-Pacific, this species is admired for its distinctive diamond-shaped body, silver color with black stripes, and peaceful demeanor. The Mono Sebae is a schooling fish that thrives in groups and can bring a dynamic aspect to any brackish aquarium setup. This article aims to provide a comprehensive overview of the Mono Sebae, covering its natural habitat, care requirements, and suggestions for compatible tank mates.

Mono Sebae are found in mangrove estuaries, coastal lagoons, and occasionally in the lower stretches of freshwater rivers. These environments are characterized by fluctuating salinity levels, which the Mono Sebae has adapted to over time. Their silvery body with vertical black bands makes them not only beautiful but also fascinating to watch, especially when they shimmer in the light as they swim.


To ensure your Mono Sebae thrives, consider the following setup and care guidelines:
A minimum of 75 gallons to accommodate their schooling nature and potential size.
Brackish water conditions with a specific gravity of 1.005-1.015, temperatures ranging from 75-82°F (24-28°C), and a pH of 7.5-8.5.
Spacious tank with areas of both open swimming space and vegetation. Mangrove roots or plants that can tolerate brackish conditions will mimic their natural habitat.
A varied diet that includes algae, spirulina, brine shrimp, bloodworms, and quality flake or pellet foods.
Keep in schools of at least 6 individuals to promote natural behavior and reduce stress.

The Mono Sebae's peaceful nature makes it a great community fish for a brackish setup, provided its tank mates can thrive under similar conditions. Here are some suitable companions:

- Scat Fish (*Scatophagus argus*): Shares similar brackish water requirements and peaceful temperament.
- Archer Fish (*Toxotes jaculatrix*): A fascinating brackish species that can coexist well with Mono Sebae.
- Green Chromide (*Etroplus suratensis*): A brackish water cichlid that enjoys similar water parameters.
- Other Monos:** Such as Monodactylus argenteus, which have similar requirements and behaviors.


The Mono Sebae is a fascinating species that adds beauty and intrigue to any brackish water aquarium. Its unique body shape, peaceful nature, and schooling behavior make it a favorite among aquarists looking to replicate the diverse ecosystems found in estuaries and mangrove forests. Providing a spacious tank with the correct brackish conditions, alongside a diet rich in variety, will ensure these magnificent fish not only survive but thrive.

Integrating Mono Sebae into a community brackish tank allows aquarists to explore the less commonly kept but incredibly diverse world of brackish water fishkeeping. The key to success lies in understanding and replicating the natural conditions these fish would experience in the wild, from water salinity to tank decorations that mimic mangroves and estuarine environments.

Whether you're an experienced aquarist or new to the hobby, the Mono Sebae offers a unique opportunity to dive into the fascinating realm of brackish water aquariums. Their care requires attention to detail and a commitment to maintaining stable water conditions, but the reward is a captivating and dynamic aquatic display that reflects the complexity and beauty of nature's transitional waters.