Golden Wonder Killifish tank mates
Aplocheilus lineatus
5 rated pairings from the Golden Wonder Killifish care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Golden Wonder Killifish needs at least 20 gallons on its own; every companion adds to that.
Excellent matches
2 · Same water, complementary zones, no conflict.
Good matches
2 · Compatible with normal care — watch space and numbers.
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Small, peaceful schooling fish that occupy mid-water zones, avoiding direct competition with surface-feeding killifish
Bristlenose Pleco
Ancistrus sp.
20 gal min · 5" adult · Peaceful
Bottom-dweller that doesn't compete for surface food and helps maintain tank cleanliness
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.