Well, I think this is the second biggest in my tank. I think I still have one small one and one larger one. What a scary looking crab it is! It lost 2 of it's legs in battle. He put up quite the fight.
Not quite as big as it looks in the picture. It's about 1.5" across. Jackie, not too many people would want this guy. It's a "Gorilla" crab. They come as hitchers on TBS rock and are very bad for reef tanks. From what I hear, they get pretty huge, and will eat anything and everything.