The Black Shark, Labeo chrysophekadion, is a large, moderately aggressive aquarium fish. In the wild this fish can reach 4 feet.
Other names for this fish include the Black Labeo, Black Shark Minnow and Black Beauty.
This impressive fish comes from South East Asia, including Malaysia and Thailand. They are threatened in the wild but quite common in the aquarium trade.
The Black Shark prefers water between 23 and 28 degrees C (74 and 82 degrees F) and moderate hardness and a pH between 6 and 8. This is a big fish and should only be kept in a big aquarium although when they are young, they can be kept for a while in a smaller one.
This fish is fairly flexible in its water requirements.
Black Sharks are omnivores, and will eat most normal aquarium foods including flakes, frozen Blood Worms, Frozen Brine Shrimp, Fresh or frozen beef heart, pellets and live food like Daphnia and mosquito larvae.
The Black Shark will eat plants. You will need to either accept that the plants you put in are part of your fish’s diet, or not put plants into the aquarium.
Although I have referred to this fish as being moderately aggressive, their temperament varies enormously from fish to fish. Some people have found their Black Shark to be very docile and timid, coming up to be hand fed. Other Black Sharks will kill the other fish in the tank.
Generally, similar sized fish should be chosen. Although they have been recorded up to 4 feet long in the wild, they will not grow this big even in a huge public aquarium. Usually they will only grow to less than a foot long but I have heard of two instances where this fish has reached 2 feet (60 cm) long in very large aquariums.
Fish that can be kept with them include Silver Sharks, larger Gouramis like blue and Gold Gouramis, the mere peaceful cichlids like Electric yellows and the largest types of tetras like Emperor and Congo Tetras. Some people have also has success keeping the larger Danios with Black Sharks.
I have been unable to find any account of Black Sharks being bred in Aquariums. This is understandable considering the size of this fish.
They are bred in some countries as a food fish.
Do not release any pet into an environment that it is not native to. The Black Shark is not common in the wild anymore but they could do considerable damage to tropical ecosystems of other continents.