help

[saywill]

I found this while I was cleaning the tank today. I think it is a crab. I also think it is molting. He is in a crevice, so the picture is not so good. I took a picture of part of his shell that fell off. Maybe that will help.

 

[Lance M.]

I'm not really sure what I'm looking at. The first picture looks like part of the shell and I don't know what the second picture is of.

At night take a small flashlight and look at the tank a couple hours after lights off. It would be better to use a red light but I've spotted things without it. Look for anything out. About a month ago I finally caught my mantis shrimp and a hitchhiker crab that had been in my tank for a year.

You could also set a trap even if you don't see anything just to see what you catch. Next tank I setup up I'm gonna put traps in there for a couple weeks before I add anything just to make sure I catch anything. For crabs I've found that the shot glass trick works well. Lean a shot glass next to a rock so that a crab can climb into the glass. Put a piece of food in there (I used squid) and then set it over night. The next morning there was this little black crab in there that I had killed (fed to a wrasse at my lfs).