Comet Fish behavior?!?

Question

i have two comet fish in a 20 gallon tank , both of my fish keep swimming along side the tank and following there reflection, but not the other fish in the tank only there reflection. its bugging me out. Help?

Answer 1

Chill out it's your fish's personality, maybe it's just something for him to do. I don't think you have anything to worry about.

Answer 2

your fish need a 70 gallon minimum