Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Before making Finding Nemo, the animation gurus at Pixar Studios had to take a graduate class in fish biology and oceanography.
13
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
The seahorse is the only fish to have a neck.
12
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2