catfish, along with most all fish---------can see people, recognize specific voices and "UNDERSTAND" when they are being attacked / tricked.
Catching a fish and then releasing it back into the same water-------he/she goes and tells the others!
HUNGER via addiction to fish food (farming) lures in the dumb fish, but they all eventually learn to TRUST or not TRUST those that feed them. Start taking them out and the others will run for their lives---but in time they return for the free food.
SPORT fish that will not eat fish food are just as smart-------FISH LURES that make a specific vibration in the water only work so long, because once you catch a sporting fish on that lure and let it go-------they go tell the others and they will not bite on that same lure again---------SO RUBBER BAITS were created. Rubber baits put out no vibration and can be "scented" to smell more real---------RUBBER BAITS trick the fish.
FISH are extremely smart as are most all living creatures on earth--------sadly, very sadly, many humans today are so mentally disturbed that common plants and weeds are smarter than they are. IN NATURE messed up people would never live------LARGE CATS, WOLVES, etc. would kill and eat them, that is their JOB, to exterminate messed up mammals.............only the human specie deliberate poisons their neighbors and even their own children.....and takes care of messed children as though they were their pets that can buy. FISH obey Nature------most humans are not that smart and do not know how.