Koi fish, anchovies and arowana are the fish that can't be kept alive. Koi fish has strong adaptability to water temperature, ranging from 5 to 30? You can live in the water temperature environment of C. Anchovies do not have high requirements on water quality and temperature, so they can be raised in winter without water heating. Arowana is an ancient fish that can live for decades.

1, koi fish

Koi fish is omnivorous, and koi fish can basically eat all the food that people eat, so it is particularly easy to raise. Koi fish is not easy to keep dead, because they have strong adaptability to water temperature and can live at 5 ~ 30? In the water temperature environment of C.

2. Anchovies

Anchovies are tropical fish with strong adaptability and low requirements for water quality and temperature. In the cold winter, anchovies can survive even without water heating.

3. Arowana

Speaking of the fish that can't be kept alive, I have to mention arowana. Arowana is an ancient fish, which feeds on fish, shrimp, frogs and aquatic insects, and its life span can reach several decades.