The largest recorded weight for a gafftopsail catfish is 4.54 kg (10.0 lb) and 69 cm (27 in) in length. 1.The net is 21 inches wide. 2.The blue shoes were 11 inches long. Most fishermen consider these fish to be more of a nuisance than anything. They are known for stealing the bait. When they are caught, it can be quite difficult to remove them from the line without getting stung or poisoned. Both the pectoral fin and dorsal fins are poisonous, making this an extreme challenge. A sting from these fish can cause an extreme amount of pain. Once the fish is removed from the line, it leaves behind a slimy trail that has to be cleaned off before a fisherman can resume fishing. This slime is toxic and can cause a significant amount of harm to handlers. Those that become poisoned by these catfish will require immediate medical treatment.