Odd Behaviour

[GerardK]

About 5 days ago one of my zebra danios started to swim in tight circles, stop and then float to the surface on its back. After about four seconds it would revive and continue to swim. since then it now swims with a slight tilt to one side but appears healthy
. Is it suffering or should I leave it in the tank.

 

[helterskelter]

their is a desiease that causes this but it's untreatable, if mainly affects the fish when they get excited ie when being feed.

 

[freddythefish]

We can't see it so we can't tell whether it is suffering or not...thats got to be for you to decide.
Interestingly zebra danios are not livebearers so this is in the wrong section...