Good eye, Francine!
The unofficial answer is that it's the prettiest pike that I saw on the trip (I have more pics that I can post on Monday...and none of them do it justice). I'm not really a pike guy but these things knocked my socks off - lots of metallic greens and blues.
The more scientific answer is that it's a pike in the saxatilis group from a small stream along Ruta 7 about 10km from Centurion, Uruguay.
So what is a saxatalis group pike from Uruguay? More science is needed:
The relationships of these species to Crenicichla lepidota (from Rio Guapore, Bolivia) and Crenicichla saxatilis (from Suriname) is unknown. However, the Uruguayan "saxatilis" can be split into two groups according to geographic locality. Herein, I refer to the Rio Uruguay drainage fishes as C. cf. lepidota and the coastal drainage fishes as C. cf. saxatilis.
More here from Ed Burress, who's doing graduate work on the pike of Uruguay (I sat next to him in the van for two weeks last trip):
http://edburress.blogspot.com/2010/12/crenicichla-saxatilis-species-group-of.html
We called the (nameless, never collected) stream location, either Cardozo (after David Cardozo, the young gaucho in the pics above, who came to see why a bunch of people were dorking around in the stream (and probably whether any of them were female...sorry dude!) or "Estancia de la casa amarilla" ("ranch with the yellow house") for the estancia owner's beautiful yellow house.
I brought back I think ten 2-3"-ers of the unknown saxatilis-complex pike from "Cardozo" and they're already eating NLS.
We also found a gorgeous, Red-Ceibal-ish (but slightly different) chanchito here (I have a large male and 3 smaller ones) and a really nice super high fin cory (didn't bring any back), among other fish.
Matt
Nice pictures!!
What is this?