Sand crabs can be kept in fish tanks, glass jars, plastic jars and other large containers, and the bottom is covered with sand to form a slope. Because fiddler crabs love to dig holes, it is suggested that the depth of sand should be around 10 cm.

Adjust the gradient to 1/3- 1/2 with 0.4-0.5% saline water, and install a small filter if possible. Change the water weekly in summer 1/3, and the water change time in winter can be slightly longer.

Food: The sand crab can be fed with minced fish, clams or shrimps. Food should be placed on the sand surface of water and fed once a day. Food that cannot be eaten should be cleaned up in time to avoid polluting the water quality.

Extended data:

Living habits

Sand crabs usually live in the intertidal zone with silt or sand bottom. Many male crabs often build a 1 semicircular cover, which is shaped like an umbrella and covers the hole. Fiddler crabs swallow sediments, and females can put sediments in their mouths without discarding inedible parts.

The male's feeding claw is only 1, and the other claw is very specialized, and its weight can reach 1/2 of the whole weight. It is called mating claw, which can be used for all kinds of ostentation before mating. The female crab follows the male crab into the cave to mate.

At night, the male crab beats the ground rhythmically with his big paws to attract the female crab. Fiddler crabs have social group behavior, and vision can be used as a signal of communication, contact and warning between crabs, so it is an interesting 1 crab group.