How to keep green crabs alive for a long time: refrigerated preservation, fresh salt water culture.

1, refrigeration preservation: refrigeration is a common way to save live green crabs, usually soak the green crabs in lightly salted water for about 5 minutes, and then put the green crabs in the freezer, covered with a wet towel on top of the green crabs can be 3 days or so you can use refrigeration preservation, too much time green crabs will freeze to death.

2, saline culture: if you need to breed longer, green crabs can use saline culture, put the green crabs in a deeper bucket, add a small amount of saline water, make sure that there is no more than the mouth of the green crabs, loosen the green crabs tied rope, put some apple cores and other food in the bucket, you can breed for about 1 week.

But when farming green crabs, you should change the water for them every other day so that the water doesn't harbor bacteria that can affect the growth of the green crabs, and if there is a death of the green crabs during the farming process, you should disinfect the buckets and the other green crabs, re-farm them, and consume them all as soon as possible in a short period of time.

Morphological characteristics of green crabs

The cephalothoracic armor of the genus Green Crab is ovoid, the length is equal to or slightly less than 2/3 of the width, the dorsal surface is rounded with an H-shaped pattern, the surface is smooth, the gastro-cardiac sulcus is not very obvious, the frontal surface has four teeth, and the anterior lateral margins have nine teeth with similar sizes, which are longer than the smooth posterior margins, and the antennae are folded and almost transverse, and the chelal legs are thick, smooth, and the chelal feet are large, and the surface is smooth, and the chelal legs are not very clear. foot thick, smooth surface, length longer than footsteps, 3 spines on anterior margin of long segment of stinging foot, 2 spines on posterior segment, 1 at the end and 1 in the middle, inner margin of carapace with sharp spines, outer margin with or without 2 spines, length of spines varies according to species.

Metacarpal segment with strong spines against margin of carapace segment, with - pairs of spines against base of phalanges, length of spines varying according to species, medial side immediately adjacent to carapace segment with a nodular projection, seat segment not spiny, rectangular lattice groove conspicuous, anteriorly and posteriorly edged with bristle-like hairs, second to fourth pair of steppes similar, fifth pair of steppes with terminal 2 segments in form of paddles, adapted for swimming.