I have a nice male frontosa. Here's the problem: He absolutely will not tolerate ANYTHING BLUE! It's like a bull seeing red.
It's strange, he turned on long time tankmates, new arrivals, and even other male AND female Frontosa. He whooped up on a Johanni, that used to torment the entire tank. I actually had to separate the Johanni, by placing it in my South American Tank.
It seems as though he's either gonna have to be the exclusive blue fish for awhile, or I'm gonna have to upgrade him to a bigger tank sooner than later. I certainly can't dither up the tank with other frontosa at this point as he is too large to have other Frontosa in this size tank.
Here's him from about a year ago(sorry about the quality)
Here he is now.