Skip to main content
Compatibility

Compatibility brief

Can Golden Wonder Killifish live with Neon Tetra?

Golden Wonder Killifish

Golden Wonder Killifish

Aplocheilus lineatus

semi-aggressive~10cm
Neon Tetra

Neon Tetra

Paracheirodon innesi

peaceful~4cm
VerdictRISKY

Risky. This mix is commonly discouraged for typical setups.

Golden Wonder Killifish + Neon Tetra: Known incompatible pairing. Adult golden wonders reach 10 cm and treat 4 cm tetras as prey. The neon school disappears over a few weeks, often at night. Not a viable community pairing.

Compatibility score

20/100

Profile confidence: low

Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.

Min tank

80L

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

Temperature
Range in °C22–26°C shared
Golden Wonder KillifishNeon TetraShared window
pH
Range6–7 shared
Golden Wonder KillifishNeon TetraShared window
Size / predation

Golden Wonder Killifish (10cm adult) may treat small Neon Tetra (~4cm) as food once grown — plan adult sizes, not shop sizes.

Temperament / behaviour

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

Assessment details

  1. Known incompatible pairing

    Top issue

    Adult golden wonders reach 10 cm and treat 4 cm tetras as prey. The neon school disappears over a few weeks, often at night. Not a viable community pairing.

  2. Temperament difference

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

  3. Golden Wonder Killifish may eat Neon Tetra

    Golden Wonder Killifish (10cm) is predatory and Neon Tetra (4cm) is small enough to be eaten. This pairing is unsafe.

  4. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Adult golden wonders reach 10 cm and treat 4 cm tetras as prey”

Known incompatible pairing

Next steps

Concrete changes, not "research more" filler.

  • •Provide plenty of hiding spots and visual breaks so Neon Tetra can escape if harassed.
  • •Neon Tetra should be kept in a group of at least 6 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 Golden Wonder Killifish + Neon Tetra

Compare another pairOpen tank builder

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.

Full tank-mate guides

Related pair checks

Golden Wonder Killifish + Neon Tetra — common questions

Can Golden Wonder Killifish live with Neon Tetra?
For most keepers, no. The verdict is RISKY: at least one check fails hard for a typical home tank. Choose a different pairing, or read the assessment details on this page to see exactly what fails before deciding.
What tank size do you need for Golden Wonder Killifish and Neon Tetra together?
Plan around 80 litres as the working minimum. That figure comes from each species' published minimum and their group needs, and it assumes adult sizes, not shop sizes.
What's the main risk?
Known incompatible pairing. That is the check that fails outright for this pair. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.
What should you check before buying?
Provide plenty of hiding spots and visual breaks so Neon Tetra can escape if harassed. Neon Tetra should be kept in a group of at least 6 for best health and behaviour.