Bully Danio..

[laura_gr]

Hi..Last week i bought 6 zebra danios, they are the first fish in the tank. They all seemed to be fine for a couple of days, but now one fish that is slightly larger than the rest seems to be chasing (and looks like biting) the other fish whenever they go near a certain area of the tank. This normally seems to happen just after feeding or when i put the bubbles on, is this normal? And what can i go about it?

Thanks in advance

 

[The-Wolf]

perfectly normal for ZDs.
they have a pecking order and the fish doing the chasing is the alpha fish, I'm guessing a female.

 

[xostrawberryox]

Have you got any plant cover in the tank? How are the others reacting to the bully?

 

[laura_gr]

Yeh, there's lots of plant cover and a rock with caves. They seem to retreat here when they get chased