Does anyone have any actual experience owning one of these? I have a 90gl with a flatworm issue and I'm interested in a natural predator to control them. I realise they only eat FWs and I was looking into raising FWs in a smaller tank just for the Blue velvet so it wouldn't starve down the road. Either that or possibly loan it out to other tanks locally if someone else needs it. Are there any fish that will go after these guys? I've heard lots of positives on these things working out well but I was hoping to hear from someone with first hand experience. Thanks in advance!