djembekah - Thanks a lot! I think he/she is very nice too. As we would hope XP
scootshoot - It's always fun to hear stories about other people finding males labeled as females! Even if it is in a sorority tank :/
Looking more at the new fish, he/she appears to have fin rot, which would explain the short fins. The ventrals are pretty long for a 'female' as well. Much longer than my girls (who are DEFINITELY girls XD)
I actually have been trying to sex my baby betta, who I've had for over a month now. First I thought it was male, then female. Then I got some opinions on this site , which confirmed female. But now, I've been reading that juvies with anal fins that are long in the back and slanting down will turn out to be males. My juvie has this, and an egg spot (which I know young males can have), but it's still perplexing!
And its name is Elvis, so I hope it's a boy!
For that reason, I'm not naming this one until its gender is confirmed.