All species
fishintermediate
Silver Dollar
Metynnis argenteus
A big, shimmering disc of a fish — peaceful with large tank mates but destroys every live plant in sight.
5–6 in10+ years
Habitat
Enclosure
75 gal minimum · schools of 5+
Temperature
75–82°F
Humidity / Water
Freshwater · pH 6.0–7.5
Heating & lighting
Strong heater and heavy filtration. They're powerful, skittish swimmers — give them length to move and a tight lid, they jump.
Diet
Feed these
- Vegetable flake and spirulina
- Blanched lettuce, zucchini and spinach
- Pellets
- Occasional bloodworms
Never feed
- Live plants — they eat every one
- Small fish they can swallow
- High-protein diets (they're mostly vegetarian)
Feed vegetable-heavy foods twice a day. In planted display tanks use silk plants — nothing green survives them.
Cohabitation
Can live with
Oscar — huge tanks only Other silver dollars — schools of 5+ Large peaceful fish
Never house with
Neon tetras and guppies — swallowed Betta Angelfish — fins get shredded
A big peaceful school that mixes with Oscars and other giants. Plant-eaters by nature — aquascape with plastic.
