My crab's behavior,
They are kept in a 29gl tank with 5 inches of FB mixed with 4 cups playsand. My crabs seem to love to burrow in it, and when they dig down it keeps their air pockets open. During they day, They sometimes climb, eat, drink, or change shells, Since the temp. is hotter in the day, they like to hide between the plants, and grass, they never enter cocohuts during the day. I guess they feel like they're in their natural environment.(Climbing the tops of trees, and hiding in leaf's, and shrubbery) At night the go crazy! The crawl alover the place, eat, and drink, Climb everything, and hide in the cocohuts.
When i first bring them home, I always place them in ISO (isolation) and they soak in the salt water dish, and eat all the fresh food they can, and almost always dig down to destress. Then come back up about 2 weeks later and are ready for the main tank, I always bathe mine when im introducing, just so they'll all small clean.
When mine are getting ready to molt, they lose activity, eat and drink alot! and usually dig down. I try to ISO them when i notice this activity but not all my crabs go through it, Most just went down and suprised me.
That's all i can think of for now, So go ahead and add your crabs behavior to help out new crabbers
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hermit-crabz-boi
~Allen Guerrero