Black Bar Endler tank mates
Poecilia wingei
6 rated pairings from the Black Bar Endler care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Black Bar Endler needs at least 5 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Peaceful algae eaters with identical water parameters and non-aggressive temperament
Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Similar size, peaceful nature, and water parameter overlap make them ideal nano tank companions
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful detritivores that help maintain tank cleanliness without competing for food or space
Good matches
3 · Compatible with normal care — watch space and numbers.
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Compatible water requirements; small size means minimal competition, though fry may be predated upon
Least Killifish
Heterandria formosa
5 gal min · 1.5" adult · Peaceful
Comparable size and peaceful temperament; both prefer similar warm, slightly alkaline conditions
Orchid Endler
Poecilia wingei
5 gal min · 1.2" adult · Peaceful
Congeneric species with similar care requirements; can interbreed, so separate if maintaining pure lines
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.