· Fish have been on the earth for more than 450 million years.
· Fish are vertebrate animals that live in the water. Vertebrate means they have a spinal cord surrounded by bone or cartilage.
· Most fish reproduce by laying eggs, though some fish, such as great white sharks, give birth to live babies called pups.
· There are over 25,000 identified species of fish on the earth.
· 40% of all fish species inhabit fresh water, yet less than .01% of the earth's water is fresh water.
· Relative to their body size, fish have small brains compared to most other animals.
· There are more species of fish than all the species of amphibians, reptiles, birds and mammals combined.
· Fish feel pain and suffer stress just like mammals and birds.
· Some species of fish have skeletons made only of cartilage.
· Tuna can swim at speeds of up to 70 kph (43 mph).
· The oldest known age for a fish was an Australian lungfish. In 2003, it was still alive and well at 65 years old.
· Jelly Fish lacks in terms of having outer-shell or skeletal structure. They are considered as the most intelligent specie in fishes, yet they have no brain. Jelly Fish is the only fish that in-takes food and passes-out waste material from the very same mouth.
· Catfish have over 27,000 taste buds. Humans have around 7,000.
· Saltwater fish need to drink more water than freshwater fish. Since seawater is saltier than the liquids in a fish’s body, water inside the fish is constantly flowing out. If they didn’t drink to replace the lost water, saltwater fish would dry up like prunes.
· Mermaids are mythological creatures with the tail of a fish and the upper half of a woman.
· Although jellyfish and crayfish have the word ‘fish’ in their name, they aren’t actually fish.