The seahorse is the only fish to have a neck.
12
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
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