Black ghost knifefish compatibility
Every pairing AquariumHQ has assessed for Black ghost 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 Black ghost 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 | 67 | 74% |
| territory | 51 | 57% |
| temperature | 42 | 47% |
| 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 |
|---|---|
| Workable | 34 |
| Comfortable for both | 18 |
| One animal at the edge of its range | 15 |
| Forced compromise — neither animal is where it wants to be | 15 |
| No overlap at all | 8 |
Every assessed pairing
Grouped by verdict, worst first.
Incompatible (65)
Should not be attempted. At least one factor is expected to cause harm.
- with Amano shrimp5 concerns
- with American flagfish6 concerns
- with Angelfish4 concerns
- with Black ruby barb3 concerns
- with Bleeding heart tetra3 concerns
- with Bloodfin tetra3 concerns
- with Bolivian ram5 concerns
- with Bristlenose pleco5 concerns
- with Bronze corydoras5 concerns
- with Cardinal tetra2 concerns
- with Celestial pearl danio3 concerns
- with Cherry barb2 concerns
- with Cherry shrimp5 concerns
- with Chili rasbora3 concerns
- with Clown knifefish3 concerns
- with Convict cichlid5 concerns
- with Doctor fish7 concerns
- with Dwarf gourami4 concerns
- with Eastern rainbowfish5 concerns
- with Electric yellow cichlid6 concerns
- with Ember tetra2 concerns
- with Firehead tetra3 concerns
- with Flavescent peacock6 concerns
- with German blue ram6 concerns
- with Ghost shrimp5 concerns
- with Golden wonder killifish2 concerns
- with Goldfish4 concerns
- with Guppy4 concerns
- with Harlequin rasbora3 concerns
- with Honey gourami4 concerns
- with Indian glassfish3 concerns
- with Iridescent shark2 concerns
- with Jewel cichlid4 concerns
- with Kribensis6 concerns
- with Kuhli loach4 concerns
- with Molly4 concerns
- with Neon tetra3 concerns
- with Otocinclus4 concerns
- with Panda corydoras5 concerns
- with Pea puffer4 concerns
- with Peacock gudgeon6 concerns
- with Pearl gourami4 concerns
- with Peppered corydoras5 concerns
- with Pictus catfish4 concerns
- with Platy4 concerns
- with Pygmy corydoras4 concerns
- with Rainbow shark5 concerns
- with Red zebra cichlid5 concerns
- with Red-eye tetra2 concerns
- with Red-tailed black shark5 concerns
- with Redtail catfish5 concerns
- with Rummy-nose tetra2 concerns
- with Sailfin molly5 concerns
- with Scissortail rasbora3 concerns
- with Serpae tetra3 concerns
- with Siamese fighting fish6 concerns
- with Silver arowana4 concerns
- with Silver dollar2 concerns
- with Skunk loach4 concerns
- with Swordtail4 concerns
- with Tiger barb3 concerns
- with Upside-down catfish3 concerns
- with White Cloud Mountain minnow3 concerns
- with Yoyo loach4 concerns
- with Zebra danio3 concerns
Poor match (14)
Workable only in unusual circumstances. Not a pairing to plan around.
- with Blue acara6 concerns
- with Discus4 concerns
- with Electric blue hap3 concerns
- with Firemouth cichlid5 concerns
- with Frontosa6 concerns
- with Giant gourami5 concerns
- with Green terror4 concerns
- with Koi carp4 concerns
- with Moonlight gourami5 concerns
- with Mystery snail6 concerns
- with Nerite snail5 concerns
- with Red swamp crayfish5 concerns
- with Rope fish5 concerns
- with Siamese algae eater4 concerns
Conditional (4)
Can work, but only if the stated conditions are met.
Generally compatible (7)
Usually works. Minor points to watch are listed below.
Verdict distribution
| Verdict | Pairings | What it means |
|---|---|---|
| Incompatible | 65 | Should not be attempted. At least one factor is expected to cause harm. |
| Poor match | 14 | Workable only in unusual circumstances. Not a pairing to plan around. |
| Generally compatible | 7 | Usually works. Minor points to watch are listed below. |
| Conditional | 4 | Can work, but only if the stated conditions are met. |