Mike, I can only speak of the A. nijsseni "Requena". The type locality for A. nijsseni is about 14 km east of Genaro Herrera, which lies on east bank of the Rio Ucayali. Requena is only a few km south of Genaro Herrera, also on the east bank. I have seen fish from both localities side by side and could not see any differences. Based on the proximity of the two localities, I'll have to say that they are one and the same population. >A. sp. aff. nijsseni (Requena) - Requena, Peru is on the Rio Ucayali, >not the Rio Yavarí where A. nijsseni comes from. The type locality is actually closer to the Rio Ucayali (+/- 20km) than to the Rio Yavari (+/- 80 km). Both, the A. nijsseni "Requena" and the A. sp. "Diamant" are being imported from Germany. I couldn't get any good info on the "Diamant" other than it being a heavy bodied species. Julio ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!