Gotta say, the Humu is really funny. He's still working on his cave at the back of the tank. Takes a mouthfull of sand, then swims to the top of the tank over the rocks and spits it out towards the front. :lol: The rocks towards the front are covered in sand! He's also gotten pretty docile after the first day. He doesn't bother any of the fish, not even the Niger anymore.