pearlfish

In 1975, Victor Benno Meyer-Rochow was diving off the Banda Islands in Indonesia, when he collected a leopard sea cucumber—a cylindrical relative of starfish and sea urchins. It was a large and stubby specimen, 40 centimetres long (16 inches) and 14 centimetres wide. He dropped it in a bucket of water, which he placed in a refrigerated room.   Sometime later, a slender, eel-like fish swam out of the sea cucumber’s anus.It was a star pearlfish, and it wasn’t alone. Another wriggled out. And another. After ten hours, 14 pearlfish had evacuated the animal’s bum, each between 10 and 16 centimetres long. Another one stayed inside.

my summarizes paragraph.

This is the pearlfish but I like to call it the anus fish because its defense is that it swims up the anus of a sea cucumber