1, silver shark: is a petite and cute little fish, but also the earliest ornamental shark kept by fish farmers. Native to Thailand and other places, because of the appearance of the shark and named, but the silver shark is a tropical fish, the character is quite docile.

2, red tail shark: originated in Thailand. It is the smallest and most colorful of all ornamental sharks. One of the bigger ones is only 15 centimeters. Although small, but a big temper, strong sense of territory. There is obvious fighting between peers, but can live peacefully with other species of ornamental fish.

3, blue shark: individual than the first two are larger, some can grow to more than 50 centimeters or even larger, so it can be classified as a large fish. Adult blue sharks have the dominance of sharks and will devour small fish.

4, tiger shark: native to Thailand, Malaysia and other countries. Fast-growing, large size, mixed diet, resistant to hypoxia. Tiger sharks can generally grow to about 30-40 centimeters. However, it depends on the size of the fish tank. The bigger the tank, the faster it grows.