Added a small pump to make L134 leopard frog plecos tank to ad a little more flow as they come from the Rio tapajos river. Mine are wild caught and like clean flowing water. I think this guy likes it. They like the black diamond blasting media because easy to move and make caves. One is already darker tan skin 3 are more black and white still I think because younger. The one with more predominate colors is bigger. This is one of smaller.