I'm leading three more Tropical Fish Collecting Trips in the Peruvian Amazon this year.
Right now I'm seeing the cheapest R/T flights ever to Lima from Dulles at sub $400 roundtrip on several airlines. Add the flights Lima/Iquitos/Lima on LATAM for ~$200 or use one of the discount airlines taht fly that route for even less.
Here is a link the fish collecting trips:
http://www.mtamazon.com/calendar
Two trips in August and a very special trip in October that rpovides a complete tax write off if you itemize deductions. The October trip should provide fish species rarely if ever seen before in the hobby.