Just an observasion I'd like to share... It's interesting that the cruzi fry understand the pertensis females' instructions. The females of the two species look very different, especially in brood colouration, so It seems to me that the brood colours are displayed to other adults, and it's actually the fin twitching etc. that the fry respond to. Maybe it's a language that all apistos understand, regardless of species. Jason ------------------------------------------------------------------------- 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"!