1. pacu fish

Pacu fish basically have the same teeth as humans, and they are keyed to feeding on nuts, fallen leaves, aquatic flora, and small turtles, and despite being a bit scary looking, they are gentle and generally not a risk to humans.

2, the water tiger fish

The water tiger fish has "piranha" bad behavior. Its head occupies a very large proportion of the body, and is skewed backward with thick bones. The jaw is more developed and powerful, sharp teeth, triangular, serrated sort, mouth chaotic bite force is good, teeth like a razor. Whether encountered all small animals, if you open your mouth to bite, will bite off a neat piece of meat.

3, sparrow eel

The teeth of the sparrow eel is also very powerful, the body is long and cylindrical. Head kiss flat, upper and lower jaw protruding longer, teeth sharp, God like a crocodile mouth. Sparrow eel is also a top poisonous fish, fish roe has poisonous "the world's top ten talk about water vicious fish" one.

4, toothfish

Toothfish even dare to bite people, nature is vicious. Adult fish foraging method is basically to wait for the raid dominant, juvenile and sub-adult fish will attack foraging group feeding is not easy to clear the aquarium, but also pay attention to the hand do not lean too close to it.

5, Mark toast

Mark toast is a less common small and medium-sized fierce ornamental fish, but also has sharp teeth. Personalized rude, cruel, fast patrol, group swimming is very strong, like strong light, like live food, not suitable for group rearing (the only and water tiger fish group rearing, but the total number of water tigers can not be too small) mouth can open very large, full of mouth coquettish.