Clown Killifish tank mates
Epiplatys annulatus
5 rated pairings from the Clown Killifish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Clown Killifish needs at least 5 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.Least Killifish
Heterandria formosa
5 gal min · 1.5" adult · Peaceful
Similar size, peaceful temperament, and identical water parameter requirements make them ideal companions
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Peaceful snails that share the same water conditions and pose no threat to killifish
Good matches
3 · Compatible with normal care — watch space and numbers.
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Small shrimp are compatible; ensure adequate hiding spaces and monitor for predation of shrimplets
Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Tiny, peaceful tetras with similar water requirements; avoid larger tetra species that may outcompete for food
Pygmy Corydoras
Corydoras pygmaeus
10 gal min · 1" adult · Peaceful
Dwarf catfish that occupy the bottom zone and won't compete for surface food; maintain soft substrate
Also recommended alongside Clown Killifish
Species whose own guides list Clown Killifish as a tank mate.
Argentine Pearlfish
Austrolebias bellottii
10 gal min · 1.5" adult · Semi-aggressive
Banner Lyretail
Aphyosemion calliurum
10 gal min · 1.5" adult · Semi-aggressive
Blue Gularis Killifish
Fundulopanchax sjoestedti
20 gal min · 4" adult · Semi-aggressive
Bluefin Notho
Nothobranchius rachovii
10 gal min · 2.5" adult · Semi-aggressive
Cape Lopez Lyretail
Aphyosemion australe
10 gal min · 2.5" adult · Semi-aggressive
Eggers' Notho
Nothobranchius eggersi
10 gal min · 1.5" adult · Semi-aggressive
Kilombero Notho
Nothobranchius kilomberoensis
5 gal min · 1.5" adult · Semi-aggressive
Korthaus's Notho
Nothobranchius korthausae
10 gal min · 1.6" adult · Semi-aggressive
Nothobranchius Killifish
Nothobranchius rachovii
10 gal min · 2" adult · Semi-aggressive
Turquoise Killifish
Nothobranchius furzeri
5 gal min · 1.5" adult · Semi-aggressive
Walker's Killifish
Fundulopanchax walkeri
10 gal min · 1.5" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.