Agressive Zebra Danio

Huugs · 06-02-2005, 04:47 AM

I have 4 zebra danios in a tank its a 23Gallon and one of them (the bigger one) seems to patrol the tank and chase the other ones. They are all new and I got them all at the same time altho he was always slightly bigger.

The one that is doing the chasing has a slightly longer tail that is in 2 halves (top and bottom) so Im not sure if this is actually a differnt type of fish. But other than the tail its identical to the others.

Will this be a problem he doesnt seem to ever catch them but Im wondering if this is bad for the fish?
I havnt got anymore fish yet because the tank is cycling so once its finished Ill probably add some glowlight danios or some neon tetras.

Any advice or comments on this situation would be appreciated. Its weird becaus I thought they were passive fish and liked to school.

Lydia · 06-02-2005, 07:19 AM

my experience with them is they like to school but they also like to chase each other around....so i wouldnt say it is a problem

MyraVan · 06-02-2005, 07:26 AM

Yup, this is absolutely normal. It's just the bigger guy showing the others who's boss. No harm results.

Damon · 06-02-2005, 12:08 PM

Alpha female, that is, and its normal. Adding 2-3 more will help also.

06-02-2005, 04:47 AM	#1
Huugs Senior Member Join Date: Apr 2005 Location: London UK Age: 23 Posts: 253	Agressive Zebra Danio I have 4 zebra danios in a tank its a 23Gallon and one of them (the bigger one) seems to patrol the tank and chase the other ones. They are all new and I got them all at the same time altho he was always slightly bigger. The one that is doing the chasing has a slightly longer tail that is in 2 halves (top and bottom) so Im not sure if this is actually a differnt type of fish. But other than the tail its identical to the others. Will this be a problem he doesnt seem to ever catch them but Im wondering if this is bad for the fish? I havnt got anymore fish yet because the tank is cycling so once its finished Ill probably add some glowlight danios or some neon tetras. Any advice or comments on this situation would be appreciated. Its weird becaus I thought they were passive fish and liked to school.

06-02-2005, 12:08 PM	#4
Damon Aquatic Naturalist Join Date: Jan 2005 Location: Dayton, Ohio Age: 32 Posts: 14,971	Alpha female, that is, and its normal. Adding 2-3 more will help also. __________________ For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow. Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress)

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06-02-2005, 07:19 AM	#2
Lydia Ichthus Owner Join Date: Feb 2005 Location: FL Posts: 1,902	my experience with them is they like to school but they also like to chase each other around....so i wouldnt say it is a problem

06-02-2005, 07:26 AM	#3
MyraVan Senior Member Join Date: Jan 2005 Location: Cambridge, UK Posts: 861	Yup, this is absolutely normal. It's just the bigger guy showing the others who's boss. No harm results.

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