Ruskarp

The ruskarp evolved from Russian swarmers which stayed near the bottom of the river to feed on solumcrusta and other microbes that lived in the dirt. With the evolution of the tubular balgae, fungus balgae and now the bolagae these swarmers changed their diet to this new food source. They eventually split from their species and became as they are now. The ruskarp has developed a simple jawed mouth to crush their new food and have become larger due to the higher energy food and the lack of predation now that the chopclaw is extinct. It's leaf fins have split at the bottom and the lower sections have attached to a pair of the tentacles to form ornate silk-like streamers, these are used by males to attract females so females have smaller streamers. The other two tentacles have fused near the base and also have a small newly-formed fin. Due to their larger size and the lack of predation, ruskarp do not reproduce as much as their swarmer ancestors and instead each ruskarp only gives birth to a single live young at a time. Due to spending their time at the bottom of the river, ruskarp do not use as much photosynthesis as their ancestors.