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Compatibility

Compatibility brief

Can Angelfish live with Rosy Tetra?

Angelfish

Angelfish

Pterophyllum scalare

semi-aggressive~20cm
Rosy Tetra

Rosy Tetra

Hyphessobrycon rosaceus

peaceful~4cm
VerdictCAUTION

Caution. Check the issues below before buying.

Angelfish + Rosy Tetra: Caution advised. Rosy tetras nip long fins when stocked under-grouped. A proper school of eight in a 100L+ holds together with adult angels, but trios redirect their nipping at the angels' trailing fins. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

60/100

Profile confidence: low

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

Min tank

150L

Combined minimum footprint reference for these two species: about 150L (larger active fish often want more length).

Temperature
Range in °C24–28°C shared
AngelfishRosy TetraShared window
pH
Range6.5–7.5 shared
AngelfishRosy TetraShared window
Size / predation

Angelfish (20cm adult) may treat small Rosy Tetra (~4cm) as food once grown — plan adult sizes, not shop sizes.

Temperament / behaviour

Rosy Tetra is a fin nipper and Angelfish is vulnerable to nipping — long fins are a common target even when water parameters match.

Assessment details

  1. Caution advised

    Top issue

    Rosy tetras nip long fins when stocked under-grouped. A proper school of eight in a 100L+ holds together with adult angels, but trios redirect their nipping at the angels' trailing fins.

  2. Temperament difference

    Angelfish is semi-aggressive, while Rosy Tetra is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.

  3. Fin nipping risk

    Rosy Tetra is a known fin nipper and Angelfish has long, flowing fins. Rosy Tetra will likely harass Angelfish.

  4. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Rosy tetras nip long fins when stocked under-grouped”

Caution advised

Next steps

Concrete changes, not "research more" filler.

  • •Provide plenty of hiding spots and visual breaks so Rosy Tetra can escape if harassed.
  • •Avoid keeping Rosy Tetra with long-finned fish like Angelfish.
  • •Rosy Tetra should be kept in a group of at least 6 for best health and behaviour.
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 Angelfish + Rosy 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 (Rosy Tetra): Typical care sources — real tanks still vary.

Full tank-mate guides

Related pair checks

Angelfish + Rosy Tetra — common questions

Can Angelfish live with Rosy Tetra?
Yes, if you plan for it. The verdict is CAUTION, which means the pairing works when specific conditions are met, not by default. The first condition: Provide plenty of hiding spots and visual breaks so Rosy Tetra can escape if harassed.
What tank size do you need for Angelfish and Rosy Tetra together?
Plan around 150 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?
Temperament difference. That is the first thing to plan around. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.
What should you check before buying?
Avoid keeping Rosy Tetra with long-finned fish like Angelfish. Rosy Tetra should be kept in a group of at least 6 for best health and behaviour.