So, I was planning on using my old magfloat to make a frag rack. So I went up to my office to grab it. My old tank is still running to keep the LR alive (heater and powerhead)
I look on top of my magfloat and see this:

Its mostly brown, and underbelly and inside claws is red
Actually, there might be a bunch of them. I see a bunch of crab parts everywhere, they must be picking each other off. I think ill set up a bottle trap and see how many more i can catch.
Does anybody know what kind of crab this is? I checked this website and i don't see it listed. This thing has big claws and 2 antennas
http://www.chucksaddiction.com/hitchcrabs.html