I saw one yesterday at a fish wholesaler that was 10"+/- . It will probably retail for $300-400.00 when it gets to a retail market. The fish was in great condition except the very front of its nose/mouth was smashed inward somewhat. They have flatten out looking whiskers and sit on their pelvic fins ,facing into the current. I have only owned one of them, but what a great fish. Mine was hard to get to eat, especially when the lights were on. Mine loved live fish, of course. I also got it to accept white shrimp, nightcrawlers, and crawfish tail meat. It completely ignored pellets and even swam away from them. Like Chixulub and others have said, they are pretty demanding. They would love the current to be so strong that no other fish could swim in it, so as the aforementioned fish would have to stay in the eddies out of the current. Right where the catfish is waiting on them.