The clown knifefish is a popular aquarium fish, but can grow to over three feet long.
What kind of fish can you put with a black ghost knife fish?
Almost any peaceful freshwater fish can be paired with your black ghost as long as they’re not too small. Some owners have gotten away with small fish like Celestial Pearl Danios or Green Neon Tetras but that pairing tends to only be viable while the knife fish is still on the small side.
What do black knife fish eat?
Black Ghost Knife Fish are carnivorous and eat in- sects, small crustaceans and fish in the wild. For this reason, they enjoy a mixture of live foods such as Daphnia, Brine Shrimp, meaty frozen foods, worms and feeder fish.