FishingOut;4645846; said:"He" does kinda look like a male. Maybe because his horn is on the bottem. A lower-horn. haha
But dont be suprised if "he" lays some eggs eventually. I've seen ALOT of fish, but no males with a breeding tube quite like that.
BTW, Judging sex by personality has no barring whatsoever. I've seen females a 3rd the size of all male tankmates and she ran the show.