is this betta a male or a female?

[dbrooke1]

don't want them to be stressed. will just keep them the way they are. :)
thank you, appreciate it.
after he was put in his new home, i fed him and he's been acting better since he ate. he seems healthy. also once let him flare at a mirror for a couple of minutes. he's little but he's more aggressive than my first betta.