The term 200 FINS is a crossword puzzle term that refers to five different types of fish. GEE is a three-letter word for a type of fish found in the North Atlantic and Mediterranean Sea, EEL is a three-letter word for a long, snake-like fish, TENNER is a six-letter word for a type of fish found in the Pacific Ocean, SAWBUCK is a seven-letter word for a type of fish found in the Atlantic Ocean, and OPAH is a four-letter word for a large, colorful fish found in the Pacific Ocean.