Intresting one, it dose look like some of the wild Trinidad and Tobago fish I've seen of Dr Burgess, but their are over 30 locations all different and breed true (like cultavated lines), but their's so many locations i cant be sure, they look like a wild guppy though.
At the BLA auction their was some fish similar to these but a cultavated line.... As ever cant remember the name though. I'll see if i can goto the breeder to get some pics soon, as their local to me.