The Argentine fishermen Raul Silva fished in the lake with human teeth! The fish was about to have an arm so long that Hilfa initially thought it was an eel, and he didn't feel right until a dog was bitten and screamed. He took the fish home to freeze in case someone wanted to study it. In fact, this type of fish is called pulmonary pulmonary pomegranates, usually living in the Paraguay Slow Valley, which is rarely seen in Argentina.
Forty-four-year-old Hilfa went out to fish and suddenly saw something in the water, initially thinking it was a big eel, but a dog was bit so scared that he went up and picked up the fish that I had never seen before. He opened the fish mouth, saw a square tooth in a neatly organized form, like a human tooth, and put it in the freezer before anyone wanted to study it.
It's actually called "South American Lungfish," which is usually found only in Paraguay's slow-paced basins, so it's less known than in southern Argentina. Young pulmonary fish eat insects or snails, but become impurity when they reach adulthood. They also eat shrimp and algae and crush food with their teeth.