Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
Sharks, like other fish, have their reproductive organs in their chests.
248
Before making Finding Nemo, the animation gurus at Pixar Studios had to take a graduate class in fish biology and oceanography.
13
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The seahorse is the only fish to have a neck.
12