Forgive me but I don't understand your meaning here brother.
First you said you wouldn't normally eat anything that is predatory, now we're talking about bottom feeders. Kingfish (Whiting) and Croakers are bottom feeders but they are really delicious eating. The Redfish is a bottom feeder, but they are fully scaled and not anything like a catfish. Halibut and Flounder are bottom feeders, even the highly sought after Pompano is a bottom feeder.

I'm a fisherman, just trying to understand what you are saying... even catfish are delicious eating really... what do you mean by "swine of the sea?"