When young, the Black Devil can be kept with a variety of fish. However, it is not suitable for black devils to mix with other fish when they are adults, because the adult black devils will attack other fish because of the turf.

Let's take a look at other information about black devils !

Black devils can be up to 40 cm long, with flat sides, like sharp knives. The black devil's chest, abdomen and tail are tall and narrow, the black devil's tail paddle and caudal fin are stick-shaped, and the black devil's head is straight back. No dorsal fin. The pectoral fins are positioned higher. The pelvic fin starts from the thorax and joins the anal fin to the caudal peduncle, like a long lotus leaf that adorns the lower body.