Gymnothorax Polyurandon is a freshwater moray eel. Got these from Wes of Rare Fish. He was selling some 36"+! I have 4, 10"-14". Wes told me to feed Krill to brighten up the colors, and it seems to work! Mine eat primarily krill, floating sticks, hikari gold+. I feed sinking food to my group of loaches, and these eels go straight to eat floating food.