here_fishy_fishy24

I've had my Tiger Barbs for a while, and today I noticed 3 of them hovering in the same spot vertically, they've been doing it for about 3 hours now. Is this normal? Nothings changed in my tank for a while.

capekate

Have you done a water test lately? Could it be a problem of water quality?
have you noticed any aggression in the tank? What kind of cichlid do you have in that 12g tank? It does sound like a lot of fish there and I am wondering if there is any reason for the barbs to be on guard. I know that a few of my fish will be vertical, heads down when they are in sort of a defensive mode.

Nick G

Yeah, my Neons do it if my male Krib is in a bad mood and chasing them. I think it is defensive, or submissive.