Hey Kacie
I am very jealous!! I have been looking for these fish for 2 years.
The aren't really rare in the hobby but you for sure don't see them everyday. I think they started coming around '06-'07 more often.
Like all Australoheros (same as Gymno's) they can take the cool down and that will also bring out their best colors. However if they are small I would probably put them in a heated tank and skip the cool down this year, say around 76* F. A very cool species glad you found them.
They have no scientific name as they have not been found in the wild in forever.....so until they do and know where they come from you will see these under many names. They are believed to possibly be a color morph of Australoheros Facetum, but like I said noone knows for sure 100%. Most people simply call the "chanchitos".
Some reading for you.
http://www.cichlidae.com/article.php?id=371
Most of what you will find is on other forums, just hobbiest talking about these fish and their experience with them. If you want to know what forums let me know.
Here are some pics I pulled from google so you know what you have to look forward to.
Great fish Kacie , good luck with them.
Brian