text: i'm looking for the line class record on flat head catfish? i caught a 29 lb flat head catfish on 6 lb test line and want to know if this is a record or not? flathead catfish have got to be the ugliest of the cats. they are native to the mississippi, missouri and ohio basins and as far east as lake erie and florida. its long, wide head gives it the name. flatheads have become problems in some rivers in georgia, eating native bream species almost to the point of eliminating the population. the largest flathead landed on rod and reel is a 91 lb. 4 oz. (41.39 kg) monster caught in texas, usa on march 28, 1982. for ultra specific world line class records for a specific fish, you actually need to get a membership to the igfa. i have a membership and will let you know that the world line class record 6 lb test for flathead catfish is a 33 pounder. you can go to their website www.igfa.org for more info.