As far as wild caught dovii - everything I have read points to the purple/blue sheen ones being Nicaraguan, and the yellowish base with blue/green face and fins are supposed to be Costa Rican. I don't really know how you'd be able to discern collection point on say an F5 that has been captive bred for generations. Best to be able to see the parents of a captive bred fish, that way you can get an idea of what the coloration should be at adult sizes.