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Compatibility

Compatibility brief

Can American Flagfish live with Corydoras Catfish?

American Flagfish

American Flagfish

Jordanella floridae

semi-aggressive~6cm
Corydoras Catfish

Corydoras Catfish

Corydoras spp. (page covers the common trade group)

peaceful~6cm
VerdictCAUTION

Caution. Check the issues below before buying.

American Flagfish + Corydoras Catfish: Caution advised. Different swim zones, no temperament conflict. Flagfish work mid-water and surface, corys hold the bottom. The cooler-temperature tolerance of both species overlaps cleanly. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

72/100

Profile confidence: low

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

Min tank

60L

Combined minimum footprint reference for these two species: about 60L (larger active fish often want more length).

Temperature
Range in °C20–26°C shared
American FlagfishCorydoras CatfishShared window
pH
Range6.5–7.5 shared
American FlagfishCorydoras CatfishShared window
Temperament / behaviour

Temperament gap (semi-aggressive vs peaceful) — needs space, structure, and careful observation, not a “drop and forget” mix.

Assessment details

  1. Caution advised

    Top issue

    Different swim zones, no temperament conflict. Flagfish work mid-water and surface, corys hold the bottom. The cooler-temperature tolerance of both species overlaps cleanly.

  2. Temperament difference

    American Flagfish is semi-aggressive, while Corydoras Catfish is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Different swim zones, no temperament conflict”

Caution advised

Next steps

Concrete changes, not "research more" filler.

  • •Provide plenty of hiding spots and visual breaks so Corydoras Catfish can escape if harassed.
  • •Corydoras Catfish 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 American Flagfish + Corydoras Catfish

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 (American Flagfish): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.

Full tank-mate guides

Related pair checks

American Flagfish + Corydoras Catfish — common questions

Can American Flagfish live with Corydoras Catfish?
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 Corydoras Catfish can escape if harassed.
What tank size do you need for American Flagfish and Corydoras Catfish together?
Plan around 60 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?
Corydoras Catfish should be kept in a group of at least 6 for best health and behaviour.