Quite mild to me. Never disturb his tank mate.
You better hope he stays like that, my guy has been beta for the last 2 years getting punked by a few other fish, 2 weeks ago after a tank upgrade he grew a pair and took over the tank turning all the other alphas into betas, now he just acts like a terretorial beast all day, hoping he calms down , currently 12" he still has a lot of bulk to put on and I don't want him to turn killer on me.
Your guy has some nice color , mine isn't that saturated in blue
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