I keep waiting on one of you guys to do it. I'd go ahead myself, but I have a feeling my other tank inhabitants will make short work of any crabs I put in there, so it'll likely be a waste of time
Same here. My crayfish or fresh water prawns would dine on crab legs
Maybe after I get some fuzzy claw macros, I'll get another 10g and dedicate it to crabs. I would do fiddler crabs, just because I like the 'crab dance' that you can make them do.
A 90% full 75g tank and used cork bark/driftwood to let them get above water level.
I've attached the only photo I could find so far from back then, it was before I added cork to the surface, they would climb up the driftwood on the left side. The lighting looks terrible on the photo but it was fairly strong.
This is as full as I would put a fiddler crab in, they do not go in fully aquatic enclosures. In nature they spend most of their time out of water.