Red-tailed black sharks are rough and gentle to other fish, but they fight fiercely among themselves. When raising black shark with red tail, young fish can be put in the same fish tank, but when they grow up, it is best to put only one fish tank, because the concept of territory of black shark with red tail is unique. If there are two red-tailed black sharks in a small fish tank, they will often fight to the death for territory. In addition, they also have the habit of chasing other fish species. Adult fish will attack other fish, especially biting filamentous fins, so it is not suitable to mix with fish with filamentous fins (such as angelfish). Should be raised in the same population.
Extended data
Feeding conditions:
Red-tailed black sharks are healthy and easy to raise. Because it is rough, it should be kept in a large aquarium. It is best to put the aquarium in a cool place, and the bottom of the pond is covered with dark gravel, which can better show the bright red of its tail fin. The suitable water temperature is 22 ~ 26℃, and I like to eat animal feed. Any live bait can be fed, but increasing plant feed is good for keeping my body color. In addition, when feeding, if its body color decreases, it becomes dark gray, or even its tail fades, it means that it is not healthy enough.
Baidu encyclopedia-red-tailed black shark