Ornamental fish, what are some of the more ferocious fish in domesticated fish is the Piranha fish.

Characteristics of the Piranha :

The Piranha's neck is short, the skull, especially the palate bone is very hard, the body is ovoid, laterally compressed, the caudal fins are also shaped. The body is ovoid, laterally compressed, and the caudal fin is also shaped. The body is gray-green, dark green on the back and bright red on the belly. The teeth are sharp and the lower jaw is well developed with spines, and it is known for its ferocity. It is difficult to identify males and females. The males are generally more colorful and smaller, while the females are larger and lighter in color, with a swollen abdomen at sexual maturity.

Mature piranhas look similar to males and females, with bright green backs and bright red bellies with markings on the sides. There is a highly developed sense of hearing. Both jaws are short and powerful, with the lower jaw protruding, and the teeth are triangular, sharp, and interlocked above and below each other. It bites down on its prey and then clenches and holds on, tearing the flesh off with a twist of the body, and can bite down as much as 16 cubic centimeters of flesh in a single bite. The rotating replacement of teeth allows it to feed continuously, and the powerful array of teeth can cause serious bite wounds.

There are many species of Piranha, and the most common in the aquarium market are those with some ornamental value. The fish is turtle-green in color. Swarms of Piranha often eat the bones of animals that stray into the water in a short period of time, and even eat people who stray into the water. The body length can reach 200 millimeters.

The water piranha has become one of the most notorious animals for its razor-sharp teeth and for attacking large animals in packs. During a stay in Brazil, one person witnessed the gruesome sight of a school of piranhas tearing a cow to pieces in a matter of seconds. With their distinctive triangular teeth, the tigerfish have an incredibly powerful bite that can easily tear their prey apart. When feeding, they eat their prey cleanly, leaving only a pile of white bones.