Bilaterus

The Bilaterus is a undead alien fish creature that can be found in the Insaniquarium Universe. It is one of the final aliens that is found within the game.

Bilaterus is made up of two fish-like skeletons attached to one body, with one head resembling a pterosaur while the other resembles an armored fish with multiple eyes. Both heads have protrusions along their mouths to capture prey.