1. If you are a novice, you can raise some first-class cichlids. That is, map fish, jade crown (this is a bit fierce) and Huahu. These prices are only tens of dollars. It is better to raise Dow's fire mouth, and there are some other benefits of pineapple and pig eight quit.

2, arowana, can raise silver dragon, star dragon (more fierce).

3. If it is an ancient fish, you can raise a pointed-billed crocodile (note that this may be a blessing crocodile bought accidentally, but the blessing crocodile can grow to two or three meters). And dinosaur fish (golden dinosaur. Big-flowered dinosaur. Tiger-striped dinosaur) Swordfish (seven-star knife, tiger-striped knife).

4. There are others, such as Guansan (brightly colored) and Genghis Khan (also known as the freshwater great white shark). As for pencils and red-tailed cats, these big and fierce fish are not recommended without vats. Pure food, huge size.

5, parrot fish, generally fish farming should pay attention to maintaining good water quality, basically no problem for a long time.