I thought Opsodoras first. But, it's lacking the lateral line black bar to be O. leporhinus and the snout is too blunt to be O. cariu. It'd be cool if this was a regional color morph or an undescribed sp.
Opsodoras sp. " Jade" according to Raul at Neotropical fauna, he had that fish for sale a while back really rare morph heres a link to the site ~Trent http://www.neotropicalfauna.com/catfishes.htm