help with my nans golden algae eater

Question
I need help with my nan's golden algae eater.
We dont know whats wrong with it but it's starting to get thin and its developing some black spots on it.
Do you thing you can help me?

Answer
Hi  Leo,
Do you feed your algae eater?  Many people think they don't have to feed an algae eater, but we must feed him, or he will starve to death.  Algae is not enough to keep him alive.  There are sinking pellets made especially for an algae eater and he should have one or two pellets a day depending on his size.
Hope this helps.
Lynda