man, I cant find anything on these guys after searching the net, just on Vinny Kutty's site saying that they were a newly discovered species from Uruguay
This fish is close to Cr. gaucho BUT IS NOT Gaucho (per V. Kutty ID). They've been around before, J. Rapps had them for sale in '04. This particular fish arrived in a batch of 'supposedly' lacustris from Shark Aquarium, origin South Brazil according to George.