As far as I can see there has been no fights, or nipping taking place in my aquarium, but yet I still find myself wondering if there is tension between the two fish in it.
Our Oranda Goldfish is a sweet, big-belly girl, while our Corry Catfish is one crazy, speedy guy. He loves to swim up fast to the top of the water and catch some air.

I have been noticing our catfish has taken a liking to the goldfish's underbelly and loves to stay near her most of the time but does like his space tucked away in the back of the tank.
He also likes to swim under her sometimes, but I am not sure if she's ok with it or not.

Should I be adding another catfish of the same small petite size to keep him company? Or is the goldfish all he needs.