He looks like a blue marble with an almost half-moon tail. Did you get him at a pet store ? he doesn't seem to be the average pet store variety. That's what my bluey looked like about a month ago. now he's almost entirely blue! (see photo section.)
bettas are notorious colors changers. They often get darker in better living quarters. i've also seen mine fade when i've left the lights off for 2 days (also posted in pics section.) and mine have been changing colors as they grow since they're juveniles. One can never tell with a betta...
Last edited by LaniBaby; 05-01-2009 at 02:44 PM.