I will probably have to do the same. I have 2 right now and one is growin like a weed not saying that that makes it a male but the growth has been through the roofNot imo, I posted a sex my umbee thread when mine was that size and I kept getting mixed opinions but I kept updating the thread as it grew and was able to sex it around 5-7 inches.
yes you can sex an umbee at 3" but you have to really know to observe the fish. And it's not easy at all.
I guess male. But only a guess. U gotta keep observing and actualy know what to look for beforehand
GL
I got a few fry from the male above. Right now at the same stage as yall 2"-2.5"