Sir knife (thats his name) is doing woderfully! He is so cool and eats like a pig. I thought he would be more aggresive, but he hasnt even had any fights with any of my fish! He and some sailfin plecos even like hanging out in the same cave! For those who think my tank is to small, it is a temporary 55 gallon. I will be getting a 180 gallon this summer!