i cant help but notice on some catfish when i get them on the boat or bank that they make a little low burping noise. i remember when i caught my first cat and it did that it freaked me out, but i havent really thought about it much. seems the big cats dont do it at all or as often. whats goin on? am i hurting them?
All catfish can make that sound. A catfish produces these "stridulatory sounds" by rubbing the base of the petcoral spine against the pectoral girdle...kinda' like grinding the ball & socket joint of your shoulder. The sound is typically made as the catfish locks its spines as a defense mechanism. There is some research that shows the sound changes with fish size and some catfish even have a preference for using the right or left fin! As I've said before, those cats are cool fish!! :cool: