Carved fish: Chordata, teleost, Cicadellidae.

Longevity fish: Chordata, Kiwifruit, Polygonaceae, Tilapia.

2. Different morphological characteristics

Maximum length of carved fish: 20cm. Male flower carvings are brightly colored and have small dorsal fins. Shoufu fish has a high side, with more than 10 fins on its dorsal fin, flat or round caudal fin, and multiple longitudinal fins on its side and caudal fin. Mesh marker.

3. Different eating habits

Carving fish can make full use of local conditions. They pretend to be dead and lure small fish that eat carrion. Fushou fish is an omnivorous fish, which mainly feeds on plants.

Extended data

Reproductive skills

1, parent fish selection and collocation

For breeding parent fish, we should try to choose excellent varieties with large size, fast growth, healthy constitution and no damage, so that future generations can maintain their genetic advantages. Nile tilapia females generally weigh more than150g.

More than 250 grams of male fish. When tilapia is cultured, the ratio of male to female is generally 3-5:1,and there are more female fish than male fish, which is beneficial to improve the emergence rate.

2. Conditions of parent fish culture pond

Generally, a pond of 667- 1334 square meters is more suitable. The shape of the pond is a rectangle with a long east-west direction, the bottom of the pond is flat, and the soil is light loam or sandy loam, which is convenient for parent fish to dig nests. The water depth should be controlled at 0.8- 1 m during culture, which is beneficial to the increase of water temperature.

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