The yellow stuff in the flying crab is crab yolk.

Three warty pike crab inhabits inshore water depth of 7 ~ 100 meters of soft mud, sandy mud bottom under the stone or in the water grass. Usually use the fingertips of the first three pairs of footsteps on the seabed slowly crawling, or to the side and back backwards. When it meets the enemy, it raises its large chelae upward to attack the opponent, or dives into the bottom upright by digging the sand with the last two segments of its swimming feet.

Expanded Information:

Pike crabs are generally found in the south of the countryside, where they are found in the north of the country. p>The pike generally lives and breeds at a depth of 3-5 meters, and in winter migrates to a depth of 10-30 meters, preferring to burrow at the bottom of the mud and sand. Its adaptive salinity of 16-35, water temperature at 4 ℃ -34 ℃, PH value between 7-9, the optimal salinity of 26-32 between the optimal temperature of 22 ℃ -28 ℃.

Life habits:

Pike crabs lurk at the bottom of the sea during the day, and come out at night to forage for food and have obvious phototropism. Raised in the pond in the pike crab at sunrise and sunset in the pike crab pong more obvious vertical movement phenomenon of day and night.

Pike crab swimming, the body tilted inverted pendant in the water, the fifth step foot frequently swinging, for lateral or non-directional horizontal swimming. When diving into the mud and sand, often with the bottom of the pool at an angle of 15 to 45 degrees, only the eyes and antennae exposed.

The pike crab does not have the ability to drill holes, pond culture does not have to set up escape prevention facilities. Water temperature below 18 ℃, pike crabs more submerged in the pond side of the sand pile.

Baidu Encyclopedia_Pike Crab