those guys come from someplace very flat and muddy, no rocks, ive bought a few of them, be warned they will wiggle between a tight space and die, there gills are on the widest part of there head, when they wiggle in they suphocate. first one i thought was a freak accident, ive had it happen to like 3 or 4 throught the years, they not to smart and cant get out of traps