Watch it though, somehow mine got into my overflow, down the pipe and was doing work in my sump for a few days before I noticed it. Got him back up top. Later did some stuff in my sump, moved a sponge long ways so that water had to go thru it to get into sump. And the damn Diamond Goby did it again and got beat to death.,. Didn't think it would do it a second time. He was cool too.