I dont know how ancient a water cow is but it sure looks it. I just bought one. It does'nt seem like it eats much. Its hard because the oscars scoop everything up when its feeding time and not much hits the bottom. Any helpful hints? Tankmates are 2 6" tiger oscars, 5" Jag, and 4" firemouth> is there any type of food i can feed it without it being eaten before it hits bottom? should i try feeders? GHOST SHRIMP?