Algeafera ichthycetus
Tetraplacus ichthycetus evolved from T. electrovora that had pieces of Algeara orangensis stuck to its back . Because the tetraplacus genus lacked an immune system and A. orangensis interepreting it as a symbiont, they started exchanging nutrients. The 2 species evolved together and the other became A. xanthensis. T. ichthycetus has become a filter feeder, growing wider to fully encompass as much prey as possible and developing a W-shaped jaw-plate with a stretch of skin near the torso that increases food capacity and creates a vacuum whenever it opens its mouth, and barbed tongue to scrape food. It breeds in the summer time and heads down the water column during winter to follow its food source, which are foliumicroeus, A. orangensis, A. redensis(winter), R. electra and R. fibera. Due to its diet, it can grow up to 1.2-1.5meters long