Silver Dollar tank mates
Metynnis argenteus
4 rated pairings from the Silver Dollar care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Silver Dollar needs at least 55 gallons on its own; every companion adds to that.
Excellent matches
1 · Same water, complementary zones, no conflict.
Good matches
3 · Compatible with normal care — watch space and numbers.
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Similar size and peaceful temperament; both tolerate similar water conditions and mid-water zones
Diamond Tetra
Moenkhausia pittieri
15 gal min · 2.5" adult · Peaceful
Smaller peaceful tetras that occupy similar water zones without aggression toward Silver Dollars
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small algae-eaters that won't interfere with Silver Dollars and help maintain tank cleanliness
Also recommended alongside Silver Dollar
Species whose own guides list Silver Dollar as a tank mate.
Blood Parrot Cichlid
Amphilophus citrinellus × Vieja melanurus
30 gal min · 8" adult · Semi-aggressive
Fire Eel
Mastacembelus erythrotaenia
80 gal min · 36" adult · Semi-aggressive
Oscar
Astronotus ocellatus
75 gal min · 12" adult · Aggressive
African Butterflyfish
Pantodon buchholzi
30 gal min · 5" adult · Semi-aggressive
Bala Shark
Balantiocheilos melanopterus
125 gal min · 14" adult · Peaceful
Banded Leporinus
Leporinus fasciatus
55 gal min · 12" adult · Semi-aggressive
Bucktooth Tetra
Exodon paradoxus
40 gal min · 2.4" adult · Aggressive
Chinese Algae Eater
Gyrinocheilus aymonieri
55 gal min · 11" adult · Semi-aggressive
Convict Cichlid
Amatitlania nigrofasciata
30 gal min · 6" adult · Aggressive
Delhezi Bichir
Polypterus delhezi
75 gal min · 14" adult · Semi-aggressive
Giant Gourami
Osphronemus goramy
200 gal min · 24" adult · Semi-aggressive
Hoplo Catfish
Megalechis thoracata
75 gal min · 8" adult · Semi-aggressive
Jack Dempsey
Rocio octofasciata
55 gal min · 8" adult · Aggressive
Jewel Cichlid
Hemichromis bimaculatus
30 gal min · 6" adult · Aggressive
L114 Leopard Cactus Pleco
Pseudacanthicus sp. L114
150 gal min · 24" adult · Semi-aggressive
Marble Oscar
Astronotus ocellatus
75 gal min · 12" adult · Aggressive
Midnight Catfish
Auchenipterichthys coracoideus
40 gal min · 5.5" adult · Semi-aggressive
Nicaragua Cichlid
Hypsophrys nicaraguensis
55 gal min · 8" adult · Aggressive
Ornate Bichir
Polypterus ornatipinnis
90 gal min · 18" adult · Semi-aggressive
Ornate Pimelodus
Pimelodus ornatus
180 gal min · 14" adult · Semi-aggressive
Pacu
Colossoma macropomum
500 gal min · 42" adult · Semi-aggressive
Pinktail Chalceus
Chalceus macrolepidotus
150 gal min · 10" adult · Semi-aggressive
Red-Bellied Piranha
Pygocentrus nattereri
100 gal min · 13" adult · Aggressive
Sailfin Pleco
Pterygoplichthys gibbiceps
150 gal min · 24" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.