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
Goldfish particularly consume naturally occurring carp food in the wild like insects, tadpoles. Apart from this, they also eat frogs, spawn, and tadpoles. Since they are bred from wild carps, they are omnivores and eat aquatic plants, algae, smaller fish, and, other smaller water creatures. Some even release goldfish in still waters like ponds to get rid of mosquitoes, goldfish also thrives on mosquito larvae.