Mono Argentus Fish (Monodactylus argenteus), are commonly known as the Mono or Silver Moony. Monos are unique and interesting aquarium fish, and they require special care to thrive. Here's a general habitat and care guide for Monos:
Tank Size: Monos need a spacious aquarium, ideally a minimum of 75 gallons for a small group.
Water Parameters: Maintain a water temperature between 75-82°F (24-28°C) and a pH level around 7.5 to 8.5. They prefer slightly brackish water, so adding marine salt to achieve a specific gravity of 1.005 to 1.010 is recommended.
Filtration: Use a good-quality filtration system to ensure water quality. Monos can be sensitive to ammonia and nitrite, so regular water changes and efficient filtration are essential.
Substrate and Decor: Provide a sandy substrate as Monos like to dig. Add rocks, plants, and driftwood to mimic their natural habitat and create hiding spots.
Lighting: Moderate lighting is sufficient for Monos, and they may appreciate some floating plants to diffuse the light.
Tank Mates: Monos are typically peaceful but can become territorial during breeding. They do well with other brackish water fish such as archerfish, scats, and mollies. Avoid keeping them with aggressive or fin-nipping species.
Feeding: Monos are omnivorous and primarily herbivorous. Provide a varied diet, including high-quality flake food, pellets, and live or frozen foods such as brine shrimp, bloodworms, and algae.
Behavior: Monos are schooling fish, so it's best to keep them in groups of five or more to prevent stress and aggression. They are active swimmers and like to stay near the surface of the water.
Breeding: Breeding Monos in captivity can be challenging. A separate breeding tank with slightly saltier water may be required. They are substrate egg layers, so provide spawning sites and be prepared for the possibility of aggression during breeding.
Health and Disease: Monitor water parameters, perform regular water changes, and provide a balanced diet to prevent diseases. Quarantine new fish before adding them to your main tank.
Water Quality: Maintain consistent water quality and ensure that the tank's salinity level remains stable.
Remember that this is a general care guide for Monos, and specific requirements may vary based on your individual tank setup and the needs of the fish. Always do additional research and consult with experts or experienced aquarists to ensure the best care for your Monos.