Sharks, like other fish, have their reproductive organs in their chests.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The seahorse is the only fish to have a neck.
12