Clown knifefish compatibility
Every pairing AquariumHQ has assessed for Clown knifefish, 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 Clown knifefish 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% |
| predation | 78 | 87% |
| territory | 51 | 57% |
| temperature | 45 | 50% |
| zone competition | 30 | 33% |
| ph | 19 | 21% |
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 |
|---|---|
| Comfortable for both | 28 |
| Workable | 27 |
| Forced compromise — neither animal is where it wants to be | 16 |
| One animal at the edge of its range | 12 |
| No overlap at all | 7 |
Every assessed pairing
Grouped by verdict, worst first.
Incompatible (79)
Should not be attempted. At least one factor is expected to cause harm.
- with Amano shrimp3 concerns
- with American flagfish5 concerns
- with Angelfish6 concerns
- with Bala shark4 concerns
- with Black ghost knifefish3 concerns
- with Black ruby barb5 concerns
- with Bleeding heart tetra5 concerns
- with Bloodfin tetra5 concerns
- with Blue acara4 concerns
- with Bolivian ram3 concerns
- with Bristlenose pleco3 concerns
- with Bronze corydoras3 concerns
- with Cardinal tetra4 concerns
- with Celestial pearl danio5 concerns
- with Cherry barb5 concerns
- with Cherry shrimp3 concerns
- with Chili rasbora4 concerns
- with Clown loach2 concerns
- with Convict cichlid3 concerns
- with Discus7 concerns
- with Doctor fish5 concerns
- with Dwarf gourami3 concerns
- with Eastern rainbowfish5 concerns
- with Electric blue hap7 concerns
- with Electric yellow cichlid5 concerns
- with Ember tetra4 concerns
- with Firehead tetra5 concerns
- with Firemouth cichlid3 concerns
- with Flavescent peacock5 concerns
- with Frontosa8 concerns
- with German blue ram4 concerns
- with Ghost shrimp3 concerns
- with Gold nugget pleco4 concerns
- with Golden wonder killifish2 concerns
- with Goldfish5 concerns
- with Green terror5 concerns
- with Guppy4 concerns
- with Harlequin rasbora5 concerns
- with Honey gourami3 concerns
- with Indian glassfish5 concerns
- with Jack Dempsey4 concerns
- with Jewel cichlid4 concerns
- with Kissing gourami3 concerns
- with Kribensis4 concerns
- with Kuhli loach2 concerns
- with Molly6 concerns
- with Moonlight gourami4 concerns
- with Neon tetra5 concerns
- with Otocinclus4 concerns
- with Panda corydoras3 concerns
- with Pea puffer4 concerns
- with Peacock gudgeon4 concerns
- with Pearl gourami3 concerns
- with Peppered corydoras3 concerns
- with Pictus catfish4 concerns
- with Platy6 concerns
- with Pygmy corydoras4 concerns
- with Rainbow shark3 concerns
- with Red zebra cichlid5 concerns
- with Red-eye tetra4 concerns
- with Red-tailed black shark3 concerns
- with Rope fish3 concerns
- with Rummy-nose tetra4 concerns
- with Sailfin molly4 concerns
- with Scissortail rasbora5 concerns
- with Senegal bichir3 concerns
- with Serpae tetra5 concerns
- with Severum5 concerns
- with Siamese algae eater2 concerns
- with Siamese fighting fish5 concerns
- with Silver dollar4 concerns
- with Skunk loach2 concerns
- with Swordtail6 concerns
- with Tiger barb5 concerns
- with Tinfoil barb4 concerns
- with Upside-down catfish3 concerns
- with White Cloud Mountain minnow5 concerns
- with Yoyo loach2 concerns
- with Zebra danio3 concerns
Poor match (7)
Workable only in unusual circumstances. Not a pairing to plan around.
Generally compatible (3)
Usually works. Minor points to watch are listed below.
Verdict distribution
| Verdict | Pairings | What it means |
|---|---|---|
| Incompatible | 79 | Should not be attempted. At least one factor is expected to cause harm. |
| Poor match | 7 | Workable only in unusual circumstances. Not a pairing to plan around. |
| Generally compatible | 3 | Usually works. Minor points to watch are listed below. |
| Conditional | 1 | Can work, but only if the stated conditions are met. |