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Compatibility

Compatibility brief

Can Ember Tetra live with Golden Wonder Killifish?

VerdictRISKY

Risky. This mix is commonly discouraged for typical setups.

Ember Tetra + Golden Wonder Killifish: Golden Wonder Killifish may eat Ember Tetra. Golden Wonder Killifish (10cm) is predatory and Ember Tetra (2cm) is small enough to be eaten. This pairing is unsafe. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.

Compatibility score

30/100

Profile confidence: low

How we decideFishori checks adult size and predation risk, behaviour, water requirements and tank needs before giving a verdict.

Min tank

80L

Combined minimum footprint reference for these two species: about 80L (larger active fish often want more length).

Temperature
Range in °C22–28°C shared
Ember TetraGolden Wonder KillifishShared window
pH
Range6–7 shared
Ember TetraGolden Wonder KillifishShared window
Size / predation

Golden Wonder Killifish (about 10cm as an adult) can realistically eat Ember Tetra (about 2cm) once grown. Plan around adult sizes, not shop sizes.

Temperament / behaviour

Temperament gap (peaceful vs semi-aggressive) adds stress on top of the hard incompatibility — space and cover do not make this pairing safe.

Assessment details

  1. Temperament difference

    Golden Wonder Killifish is semi-aggressive, while Ember Tetra is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.

  2. Golden Wonder Killifish may eat Ember Tetra

    Top issue

    Golden Wonder Killifish (10cm) is predatory and Ember Tetra (2cm) is small enough to be eaten. This pairing is unsafe.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Golden Wonder Killifish (10cm) is predatory and Ember Tetra…”

Golden Wonder Killifish may eat Ember Tetra

Next steps

Concrete changes, not "research more" filler.

  • •Provide plenty of hiding spots and visual breaks so Ember Tetra can escape if harassed.
  • •Ember Tetra should be kept in a group of at least 8 for best health and behaviour.

Try instead

  • →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.

Try this next

Build the full stocking list with Ember Tetra + Golden Wonder Killifish

Plan further

Check each species’ mates list, size the glass, then verify the full stock in the builder. Methodology explains how verdicts are produced.

Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.

Profile data confidence: medium. Driven by the lower-confidence profile (Golden Wonder Killifish): Typical care sources — real tanks still vary.