There's a species of fish called "Slippery Dick". Some Fish, like the Triggerfish, can swim backward. Most brands of lipstick contain fish scales. Many Fish can taste without even opening their mouths. Herrings communicate through farts. Goldfish can't close their eyes as they have no eyelids. Many fish species are known to change sex during the course of their lives. Sharks kill 12 people per year while people kill 11,417 sharks per hour. Goldfish can see infrared radiation that is invisible to us. There's a shark in Greenland that eats polar bears and can live up to 200 years. One Puffer Fish contains enough poison to kill 30 people. If you keep a goldfish in a dark room, it will lose its color. 80% of the biomass of fish in the world's oceans has been lost in the past 100 years. Thousands of marine creatures die by mistakenly swallowing plastic bags that resemble jellyfish. Starfish don't have brains. Special cells on their skin gather information about their surroundings. There is a starfish with 40 arms. Fish can drown in water. The Sea Anemone looks like a flower, but it's actually a carnivorous animal that eats small fish and shrimp. There is a Jellyfish that could be immortal. Starfish do not have blood. Their blood is actually filtered sea water. Fish cough. "Rain of fish" is an annual weather event in which hundreds of fish rain from the sky onto the city Yoro in Honduras. Starfish can re-grow their arms. In fact, a single arm can regenerate a whole body. Fish in polluted lakes lose their sense of smell. Goldfish can distinguish the music of one composer from another. A 10-Year-Old Goldfish Had a 45-Minute Surgery To Remove A Tumor in 2014. When Anglerfish mate, they melt into each other and share their bodies forever. About a third of male fish in British rivers are changing sex due to pollution, especially from contraceptive pills, a research found. A sardine is not a species of fish, but a name that can apply to many small varieties of pickled fish, including herring and pilchard. A robotic fish was accepted by other fish and became their leader during an experiment by NYU. The goliath tigerfish is a fish that eats small crocodiles. A koi fish named "Hanako" lived for 225 years. The Salema Porgy is a species of fish that can cause hallucinations when eaten. In Ancient Rome it was consumed as a recreational drug. Fossil evidence suggests that fish have been on Earth for about 530 million years. The opah, or "moonfish", is the only known fully warm-blooded fish. Goldfish don't have stomachs and should therefore be fed easily digestible food in lots of small feeding sessions. The toxin in puffer fish is 1200 times deadlier than cyanide. In three decades, the world's oceans will contain more discarded plastic than fish when measured by weight, researchers say. Around 10% of the world's total fish species can be found just within the Great Barrier Reef. Over 40,000 plant species, 2,200 fishes, 1,200 birds, 420 mammals, 420 amphibians, and 370 reptiles have been scientifically classified in the Amazon region. Jellyfish are the ocean's most efficient swimmers, consuming 48% less oxygen than any other swimming animal. In Ohio, it is against state law to get a fish drunk. Some offshore dolphins were found with deep-sea fishes in their stomachs. This evidence suggests that offshore dolphins may dive to more than 500 m (1,600 ft). Global unemployment increased from 170 million in 2007 to nearly 202 million in 2012. A fish discovered in Australia in 2015 was named ‘Blue Bastard'. Some piranhas are cannibals. Piranhas only attack you if you mess with them or their eggs. Fish can see 70 times further in air than in water. The Climbing gourami is a fish that has the ability to climb out of water, breathe oxygen, and even walk for short distances. Older fish live longer if fed the faeces of younger fish. The eyes of the celestial eye goldfish are bigger than its stomach. 85% of Vakkaru Island in the Maldives is made up of fish faeces. The blobfish is actually a normal looking fish, it just decompresses when you take it out of extreme depths. Unlike most fish, seahorses are covered in bony plates instead of scales.