Hitting Sides Of The Fish Tank - Why?

[MissHell]

I have noticed several posts stating bettas should not be kept in vases.

The one I have was given to me by someone moving away and he came in a large vase (would fit dozen roses).
I bought him a small fish tank and when I moved him, he kept banging his face in the walls. I thought he was seeing his reflection and was worried he would get hurt doing it. I ended up moving him back into the vase.

Is banging the walls of the tank normal? Do you know what would cause that?

 

[davidnso]

Its normal, he thinks its another betta invading his territory when its just his reflection attacking himself

oh, but, dont keep him in the vase. way too small!

 

[leighann]

yeah a five gallon tank should be perfect