Red-Tailed Black Shark tank mates
Epalzeorhynchos bicolor
5 rated pairings from the Red-Tailed Black Shark care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Red-Tailed Black Shark needs at least 55 gallons on its own; every companion adds to that.
Good matches
3 · Compatible with normal care — watch space and numbers.
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Similar bottom-dwelling habits but less aggressive; provide separate caves to minimize conflict
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Small, mid-water swimmers that avoid competition with bottom-dwellers
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Peaceful schooling fish that occupy upper water column and are too small to trigger predatory behavior
Use caution
2 · Works in the right setup; read the note before combining.
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.