Chasing danios

[FishLover990]

So I just got 6 zebras yesterday and they have been fed some frozen brine shrimp and pellets throughout the day. There's I believe 4 female and two male. I know they are a schooling fish but I've had lots of chasing going on. Is this just because that's their nature?

 

[Byron]

So I just got 6 zebras yesterday and they have been fed some frozen brine shrimp and pellets throughout the day. There's I believe 4 female and two male. I know they are a schooling fish but I've had lots of chasing going on. Is this just because that's their nature?

Yes, probably not a sign of trouble, provided the tank is of sufficient size for them. This is a very active swimming species, so it needs room. And like most shoaling fish--shoaling means a fish species that lives in a group and thus must have several in an aquarium--they can develop an hierarchy within the group. We often call it "play" but in many cases for the fish themselves it is a serious business because it is part of their inherent nature. Some species do get quite aggressive at this, others do not. Again, tank size is important, and the more space they have, the better.