Species profile
Golden Wonder Killifish
Aplocheilus lineatusGolden Wonder Killifish (Aplocheilus lineatus) is a community species for a cycled 20+ gallon freshwater aquarium. Plan for about 4 inches as an adult, 72-78°F water, pH 6-7.5, and moderate care. Match tankmates by water range, adult size, activity level, and feeding needs.
FlashyModerate care
20 galMinimum tank
4 inAdult size
1Schooling minimum
72-78°FTemperature
Water Range
- pH
- 6-7.5
- GH
- 2-12 dGH
- KH
- 1-8 dKH
Behavior
- Temperament
- Peaceful
- Fin nipping
- 0/5
- Territory
- 1/5
Diet and Care
- Diet
- carnivore/micro-predator
- Diet difficulty
- 3/5
- Care difficulty
- 3/5
Planning Notes
Skilled jumper; use a tight lid and cover openings around equipment.
This species may need live, frozen, fresh, or otherwise specialized foods.
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These matches are starting points with overlapping water ranges and lower behavior risk. Always check the full stocking plan, tank size, and group counts before buying.
Run Golden Wonder Killifish through the checker with your tank size, cycle status, water, group count, and tankmates before buying.
Check my tankCompare this speciesPut Golden Wonder Killifish beside another profile to compare water range, size, diet, schooling needs, and behavior.
Open comparisonWill plants work?Match Golden Wonder Killifish against aquarium plants for nibbling, uprooting, cover, flow, and water-range flags.
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Ask AdvisorView native rangeOpen the origins map to see reviewed native-range coordinates and regional context for Golden Wonder Killifish.
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