Details are as follows:
1, Introduction
Crayfish (scientific name: Procambarus clarkii): also known as Procambarus clarkii, red crayfish and freshwater crayfish. Shaped like a shrimp with a hard shell The adult is about 5.6~ 1 1.9 cm long, dark red, with nearly black carapace and wedge-shaped stripes on the ventral back. Young shrimps are evenly gray, sometimes with black ripples. Long and narrow claws. The middle part of the carapace is not separated by a mesh gap, and there are obvious particles on the carapace. The frontal sword has a lateral thorn or a notch at the end of the frontal sword.
2. Living habits
Xiaolong crayfish and shrimp are omnivores, mainly eating plants. Small fish, shrimp, plankton, benthos and algae can all be used as their food. The breeding ability of crayfish is not strong, and crayfish breed 1 time a year.
3. Distribution range
Crayfish are widely distributed all over the world. It is mainly divided into three families: Tenebrionidae, Procambarus (or crab and shrimp) (Ostraconidae) and Crambatidae (or Crambatidae) (Crambatidae), with dozens of genera and more than 400 species. ? Procambarus clarkii is mainly distributed in Madagascar, Australia, New Zealand, Chile, New Guinea and other places in Gondwana, with a large size, and the heaviest individual found in Tasmania reaches 6 kg.