Simalgeara xanthensis
A piece of A. orangensis was stuck onto a T. Electrovora. A. orangensis interpreted it as a symbiont and, because members of the tetraplacus genus lacked an immune system, became connected at its bloodstream and they started sharing nutrients. Over time the 2 species evolved, the other one being Tetraplacus ichthycetus. A. xanthensis has become semi-permanently yellow as a result of the sunlight available to it. It shares the sugar the resulting from photosynthesis with its partner which it exchanges nutrients with. In the winter, during the polar night, it stops photosynthesizing and starts storing and processing nutrient from its host.