I just bought a pictus catfish this avo and put him in my tank just after i got home. Since then, he started out sitting by himself in the corner of my tank and when i turned the lights of tonight he began swimming up and down the tank, back and forth, over and over again. He's still doing it right now. Is he bored? Is my tank big enough for him? He's only about 2" and i have a 30 gal tank... the other thing is that im wondering is he ok on his own or would he be happier with a buddy? I really want him to be happy, im just not so sure his behaviour is natural, please help!!