They're abundant here in any BOW the river gets into when it floods. Fierce fighters and a 3 footer will destroy most common tackle. The local Western Auto used to give away a Zebco rod and reel to whoever brought in the biggest fish caught every Saturday. I won at least a dozen of them over the years by bringing in grinnils. Some black guys from up north used to come down a few times in the summer to fish for them. They called them cypress trout and bragged about how good they were. I never tried them but I had a great uncle who like them better than any other fish and he said you has to hang them up alive and bleed them out before you cleaned them or he didn't like them.