Mike, Behavior has some bearing on apisto ID. Most of it has to do with methods of threat display and breeding behavior. Advanced species for the most part use a wide gaping mouth during frontal display, while the more primitive species flair their gills & close their mouths during front displays. Most regani-group species are non-polygamous in the aquarium, something I call "casually monogamous". Casual monogamy is where a male seems satisfied to breed with only 1 female and doesn't actively go out to establish a large territory with more than one female. If there are other females, he will of course breed with them, too. Nearly all nijsseni- & pertensis/iniridae-group species seem monogamous. They seem to be "choosey" about who they breed with and will not breed with anyone but their chosen mate. The question I guess, is this the same behavior they exhibit in the wild? I'd bet many of the polygamous species are more "casually monogamous" in the wild. Mike Wise Mike Jacobs wrote: > ----- Original Message ----- > From: <IDMiamiBob@aol.com> > To: <apisto@majordomo.pobox.com> > > Question...............is behavior EVER taken in consideration when placing > a species or is it always physical? > > Mike > > Mike Jacobs > Center for Advanced Technologies > Lakewood H.S. > St Pete, Fl 33705 > mjacobs2@tampabay.rr.com > > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@listbox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@listbox.com. > Search http://altavista.digital.com for "Apistogramma Mailing List Archives"! ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!