- Ichthyology is the branch of zoology devoted to the study of fish.
- An ichthyologist is a person who studies fish.
- The most poisonous fish in the world is the stonefish.
- The whale shark is the largest fish in the world.
- The Portuguese shark dives down over 9,000 feet.
- The fastest swimming fish is the sailfish, reaching speeds of up to 68 mph.
- The electric catfish, native to Africa, is capable of generating up to 350 volts.
- Whales are mammals, not fish.