American flagfish compatibility
Every pairing AquariumHQ has assessed for American flagfish, derived from stored behavioural and environmental traits. Each verdict links to the reasoning behind it — including where the evidence runs out.
The species record is on the American flagfish page. Any pairing not listed here can be assessed on demand with the compatibility checker.
What decides this species' pairings
Counted across every assessment above — the dimensions that actually raise concerns for this animal, rather than the ones a care sheet would list.
| Dimension | Pairings raising it | Share |
|---|---|---|
| breeding aggression | 116 | 129% |
| territory | 90 | 100% |
| temperature | 69 | 77% |
| flow | 45 | 50% |
| predation | 24 | 27% |
| aggression | 15 | 17% |
Environmental compromise
Whether a shared temperature, pH and hardness band exists is a necessary condition, not evidence that it suits both animals. This counts how good the overlap actually is.
| Overlap quality | Pairings |
|---|---|
| Workable | 32 |
| One animal at the edge of its range | 27 |
| Comfortable for both | 16 |
| Forced compromise — neither animal is where it wants to be | 12 |
| No overlap at all | 3 |
Every assessed pairing
Grouped by verdict, worst first.
Incompatible (21)
Should not be attempted. At least one factor is expected to cause harm.
- with Bala shark5 concerns
- with Black ghost knifefish6 concerns
- with Clown knifefish5 concerns
- with Discus6 concerns
- with Electric blue hap6 concerns
- with Frontosa7 concerns
- with Giant gourami6 concerns
- with Goldfish4 concerns
- with Green terror5 concerns
- with Iridescent shark5 concerns
- with Jack Dempsey6 concerns
- with Kissing gourami4 concerns
- with Koi carp5 concerns
- with Moonlight gourami6 concerns
- with Oscar6 concerns
- with Redtail catfish6 concerns
- with Rope fish5 concerns
- with Senegal bichir5 concerns
- with Severum6 concerns
- with Silver arowana5 concerns
- with Tinfoil barb5 concerns
Poor match (38)
Workable only in unusual circumstances. Not a pairing to plan around.
- with Amano shrimp4 concerns
- with Angelfish6 concerns
- with Bleeding heart tetra6 concerns
- with Blue acara5 concerns
- with Cardinal tetra5 concerns
- with Cherry barb3 concerns
- with Cherry shrimp3 concerns
- with Chili rasbora5 concerns
- with Clown loach4 concerns
- with Convict cichlid4 concerns
- with Doctor fish3 concerns
- with Dwarf gourami5 concerns
- with Electric yellow cichlid5 concerns
- with Ember tetra4 concerns
- with Firehead tetra6 concerns
- with Firemouth cichlid5 concerns
- with Flavescent peacock5 concerns
- with German blue ram4 concerns
- with Ghost shrimp3 concerns
- with Gold nugget pleco4 concerns
- with Guppy5 concerns
- with Honey gourami4 concerns
- with Jewel cichlid5 concerns
- with Kribensis4 concerns
- with Kuhli loach4 concerns
- with Molly3 concerns
- with Mystery snail3 concerns
- with Nerite snail4 concerns
- with Pea puffer3 concerns
- with Pearl gourami5 concerns
- with Pictus catfish5 concerns
- with Red zebra cichlid5 concerns
- with Rummy-nose tetra5 concerns
- with Siamese algae eater4 concerns
- with Siamese fighting fish6 concerns
- with Silver dollar4 concerns
- with Skunk loach4 concerns
- with Upside-down catfish3 concerns
Conditional (31)
Can work, but only if the stated conditions are met.
- with Black ruby barb3 concerns
- with Bladder snail2 concerns
- with Bloodfin tetra3 concerns
- with Bolivian ram4 concerns
- with Bristlenose pleco4 concerns
- with Bronze corydoras4 concerns
- with Celestial pearl danio2 concerns
- with Common pleco4 concerns
- with Eastern rainbowfish3 concerns
- with Golden wonder killifish3 concerns
- with Harlequin rasbora3 concerns
- with Indian glassfish2 concerns
- with Neon tetra2 concerns
- with Otocinclus3 concerns
- with Panda corydoras3 concerns
- with Peacock gudgeon4 concerns
- with Peppered corydoras3 concerns
- with Platy2 concerns
- with Pygmy corydoras4 concerns
- with Rainbow shark4 concerns
- with Red swamp crayfish2 concerns
- with Red-eye tetra3 concerns
- with Red-tailed black shark4 concerns
- with Sailfin molly4 concerns
- with Scissortail rasbora4 concerns
- with Serpae tetra3 concerns
- with Swordtail3 concerns
- with Tiger barb4 concerns
- with White Cloud Mountain minnow4 concerns
- with Yoyo loach4 concerns
- with Zebra danio3 concerns
Verdict distribution
| Verdict | Pairings | What it means |
|---|---|---|
| Poor match | 38 | Workable only in unusual circumstances. Not a pairing to plan around. |
| Conditional | 31 | Can work, but only if the stated conditions are met. |
| Incompatible | 21 | Should not be attempted. At least one factor is expected to cause harm. |