breeding method: fiddler crabs can be raised in a fish tank or a larger container such as a glass jar or a plastic jar, the bottom of which is covered with sand and built into a slope.

because fiddler crabs love to dig holes, it is suggested that the depth of sandy soil should be about 1 cm, and .4-.5% salt water should be adjusted to 1/3-1/2 of the slope. If possible, a small filter can be installed, and the water should be changed by 1/3 every week in summer, and the water change time can be slightly longer in winter.

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

fiddler crab, a genus of Eriocheir, is a warm-water crab with trapezoidal breastplate, wide front and narrow back, narrow forehead, wide eye socket and slender eye stalk, which is widely distributed in intertidal zones of tropical and subtropical regions around the world.

fiddler crabs are widely distributed in the intertidal zone along the tropical and subtropical coast, and there are more than 8 species in the world. Their living habits are closely related to the tides. When the tide rises, they wave big claws as if calling for the tide to rise quickly, hence the name "fiddler crab".

fiddler crab likes to eat vegetarian food, such as aquatic plants and vegetables. The little guy is only the size of his thumb nail, with black background and blue spots all over his body, and his eyes grow on two long tentacles. However, the big claw that is extremely asymmetrical with his body is very bright red, so he will crawl quickly when he puts it in his hand, but he doesn't think it is a crab at all. This fiddler crab is more like a spider.