I know, old thread, but I don't think this is a CK. More likely a brown knife, asian brown knife, what ever you want to call Notopterus notopterus. I think the spots everyone was seeing is just handling damage.benzjamin13;2188346; said:It's a CK...if you look at the end of the tail, you can see a faded spot. African Brown Knives don't have dorsal fins either![]()