Above is a strange fish from the cold deep waters of the Northern Pacific Ocean. This picture is of a ragfish caught of the Alaskan coast.
The ragfish undergoes quite a metamorphasis as it matures. It starts out with a flattened shape like a halibut or flounder. It is yellow and brown with dark blotches and has pelvic fins and a rounded tail fin when very small.
Then it begins to change to the adult form. It turns solid chocolate brown, loses the pelvic fin, and the tail develops a fork. The adult has no scales. These suckers get to be more than 200 pounds! Coloration varies but the older ones that I have seen have that dark color varying to almost whitish-pink.