Golden Wonder Killifish

Golden Wonder Killifish

Aplocheilus lineatus
⚠ Use Caution
Harlequin Rasbora

Harlequin Rasbora

Trigonostigma heteromorpha

Can Golden Wonder Killifish Live With Harlequin Rasbora?

Golden Wonder Killifish and Harlequin Rasbora CAN coexist, but with some risks. Careful setup and monitoring required.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 72–82°F.

pH ✓ Compatible

Good pH overlap at 6.0–7.5.

Size ✓ Compatible

Compatible sizes (4" and 2").

Temperament ⚠ Use Caution

Golden Wonder Killifish (semi-aggressive) may have issues with Harlequin Rasbora (peaceful). Monitor closely if attempting.

Swim Level ✓ Compatible

Fish occupy different water levels (Golden Wonder Killifish: top, Harlequin Rasbora: middle), reducing conflict.

Important Notes

  • Harlequin Rasbora is a schooling fish and needs at least 6 of its kind.

Tank Requirements

Minimum tank size for this combination: 25 gallons

ParameterGolden Wonder KillifishHarlequin Rasbora
Temperature72–82°F72–82°F
pH6–7.56–7.5
Max Size4"2"
TemperamentSemi-aggressivePeaceful
Swim LevelTopMiddle
Min Tank20 gal10 gal

Check More Combinations

Use our compatibility checker to add more fish and plan your complete tank.