1 Back problems. 2  Spine problems in the back near the lower ribs can pinch the nerves that travel through the groin area and cause groin and thigh pain. 3  Spine problems include a herniated disc or lumbar narrowing (stenosis).
Fish diets are determined by which organisms are readily available in the fish's habitat. Some larger fish eat smaller fish and sometimes are cannibalistic, eating smaller fish of their own species. Catfish in the wild swim along the bottom of rivers and eat dead fish, animal feces and just about anything they can find. Learn more about Fish
Don't eat undercooked or raw freshwater fish, eels, frogs, birds, and reptiles, particularly if you are in an area of the world where the parasite is commonly found. Marinating freshwater fish in lime juice, as is done in ceviche, does not kill the parasite.he patient should be questioned about any recent history of eating undercooked or raw freshwater fish, eels, frogs, birds, or reptiles in an area where the parasite is found. Special blood tests for Gnathostoma are available, but the blood must be sent to specialty labs outside the United States.