I called a local store and this is what I got.
Me- "hey, do you have any geo's?
Employee- "Any what?'
M-"Geo's, geophagus, or satanoperca juruparii?"
E-"Is that a fish food?"
M-"No, it's a fish, they're also called earth-eaters."
E-"No, we don't sell dirt for fish, and I don't suggest that you put dirt in your aquarium."
M-"No, no, no. The fish is called an earth-eater."
E-"I've don't think there's such thing as a fish that eats dirt."
M-"So, you don't have any?"
E-"If you going to put dirt in the tank, I don't think I'd sell it to you if we did."
M-"Thank you for your time." *click*
I really hate when people that don't know what you're talking about try to talk to you like you're crazy.