These are the only available pictures, but they were caught in the Inchillaqui River near Tena in the Napo province.

My nephew caught these L's in a fast running river in the Ecuadorian Andes. Any idea about the identity?

Ward,
I can put you in touch with people in Colombia and Venezuela. Juan Mi is in Mexico, but he lives up north (San Luis Potosi if I remember correctly).
-Shane

Shane, that would be nice. Most of my Mexico travelling is in the Northwestern states of Sinaloa and Sonora. Wonder if Juan Mi can tell ...

Hi Wasp

Assuming uruguay is too far off (http://www.aqvaterra.com/ just in case) I can not provide you with any further information.

However, on the c*****d room companion (http://www.cichlidae.com/forum/index.php ) a few people from Mexico are active, a Brasilian too (from Manaus) and the owner ...

Hi, I'm an aquarium enthusiast from Belgium, but job wise spending quite some time in Central and South America (Mexico, Panama, Ecuador, ...). I'd really like to spend my free time over there looking into the local waters, but things would be a lot easier if I had some local fish lovers to contact ...