Silver Mylossoma
Mylossoma duriventre
A deep-bodied South American schooler that belongs in serious, large setups.

About
Silver Mylossoma (Mylossoma duriventre) is a deep-bodied, laterally compressed fish from the river systems of South America, native to the Paraguay, lower Paraná, and lower Uruguay basins. In the wild it is tightly connected to seasonal floodplains, moving into flooded forest and grassland areas to feed when water levels rise. A lifestyle that speaks to its need for space and variety in captivity. Despite being classified as an omnivore in the aquarium trade, this species leans heavily toward plant-based foods in the wild, and a diet rich in vegetation, fruits, and greens will keep it in good condition. Growing to nearly ten inches, it is a substantial fish that needs a large, well-filtered aquarium and plenty of open swimming room. A single specimen rarely thrives. These are social fish that do better in the company of their own kind or similarly sized, peaceful tankmates. Their shiny, almost mirror-like flanks give them a clean, understated look that suits a naturalistic South American biotope setup nicely. Silver Mylossoma holds real significance in its native range as both a commercial food fish and a target for sport anglers, which tells you something about how robust and active these animals are. This is a species for keepers who can commit to the space and long-term care they require.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Silver Mylossoma
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Silver Mylossoma get?
- The Silver Mylossoma reaches about 8–10" as an adult.
- What size tank does the Silver Mylossoma need?
- A minimum of 100 gallons is recommended for the Silver Mylossoma, with more room needed for a proper group.
- What water parameters does the Silver Mylossoma need?
- The Silver Mylossoma does best with a temperature of 72–82°F, a pH of 5–7.8, hardness around 10–20 dGH.
- Is the Silver Mylossoma aggressive?
- The Silver Mylossoma is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Silver Mylossoma eat?
- The Silver Mylossoma is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Silver Mylossoma live?
- With good care, the Silver Mylossoma typically lives 5-8 years.