Cleanse, debride and suture the wound. The fins of the saltwater catfish have a complex toxin made up of a mix of high molecular weight proteins and low molecular weight compounds. Besides intense pain that appears to be out of proportion for the physical injury, systemic symptoms can occur but are rare. They include muscle cramps, tremor, fatigue, syncope and even CV collapse. Treatment in the ER consists of immersion of the body part in hot water at approx.
Tetanus coverage is provided.
It's a good idea to treat with antibiotics that cover Vibrio vulnificus, usually a 3rd gen cephalosporin. Severe allergic reactions can occur. If you are in a boat and cannot get to hot water, a good preparation to use is a paste of baking soda and meat tenderizer. This paste is also said to be effective for jelly fish stings. There are many species, including lionfish and stonefish .