I haven't kept nicholsi, but I did have a pair of P. multicolor years ago. Expect a lot of agression. Maybe you should get the others out if possible. Bob Dixon ------------------------------------------------------------------------- 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"!