Walker's Killifish tank mates
Fundulopanchax walkeri
6 rated pairings from the Walker's Killifish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Walker's Killifish needs at least 10 gallons on its own; every companion adds to that.
Excellent matches
1 · Same water, complementary zones, no conflict.Good matches
4 · Compatible with normal care — watch space and numbers.
Clown Killifish
Epiplatys annulatus
5 gal min · 1.5" adult · Peaceful
Similar size and peaceful temperament, though males may show minor territorial behavior
Gardneri Killifish
Fundulopanchax gardneri
10 gal min · 2.5" adult · Semi-aggressive
Compatible killifish species with similar water parameter requirements
Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Small, peaceful schooling fish that occupy different water zones
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small algae eater that won't compete for food or territory
Use caution
1 · 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.