Just received a couple of unknown cories. I know there are different forms of them these came from a friend. He purchased them at wal-mart so I don't know what form they are will post picture soon. I hope they like all the algies on the back of my tank. When I told him I was looking for some he offered me a bunch I only took two for now he doesn't like them and wonts me to take his other 4. I will probaly do this soon but wont the bioload to go slowly.