Glow Danios Mean To Each Other

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KasiaM

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I have three glow danios in the tank -- yellow, red and blue. The yellow and blue are ganging up on the red one who is spending most of the time in the corner and seems terrified. Should I separate them and if so, how -- put the two aggressive ones in the baby net or separate the red one to keep it safe? Thanks!
 

AllieSten

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They get aggressive if they aren't in a big enough school. They need to be with 6 or more.
 

KimberlyG

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Is the tank fully stocked? If possible I would put 3 more in and I think you would see those behaviors change.
 

aquatickeeper

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Yeah, they might stop it and school together if kept in a school of 6+. You can mix them with other colors of glo danios, or just regular zebra danios.

What size tank and what is the other stock?
 
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KasiaM

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KimberlyG said:
Is the tank fully stocked? If possible I would put 3 more in and I think you would see those behaviors change.
Yes, the tank is pretty full. Not sure I can fit three more. Should I bring them back to the store? Separation for a bit will not help?
 

aquatickeeper

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These danios are schooling fish and must be kept in a school of 6 or more, or it will shorten their lifespan. If you don't have the ability to do that, I might as well rehome it.

What size tank and stock?
 
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KasiaM

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30 gallon tank and already crowded -- two angel fish and in additional to the three danios, three harlequins. and 6 tetras. Also an algae eater.
 

sylviepld

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I understand your dilemma. I have 5 glo danios in a 10 gallon and one of them is constantly harassing the other 4. I was thinking of bringing the 'bully' back to the store and getting another one. However, it seems that I might just need to get a few more. The problem is I may end up overstocking my tank with the two corys I have in there as well. I'm not sure what to tell you but the glo danios are not very big and I don't think adding a few more would significantly overstock you tank. Everyone correct me if I'm wrong.
 

Redshark1

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BottomDweller

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I would rehome the glo danios, they nee to be kept in groups of 6+ and need cooler water than the angelfish anyway.
 

AllieSten

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BottomDweller said:
I would rehome the glo danios, they nee to be kept in groups of 6+ and need cooler water than the angelfish anyway.
I totally agree. If your tank is already fully stocked, I wouldn't replace them with anything. Better to have too few fish than too many.
 

sylviepld

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I got 2 more glo danios to make a total of 7. I also have 2 pepper corys and a nerite snail. The 'bully' of the crowd seems to have settled down a bit but he still nips at the others sometimes. The larger the group the better but if you are overstocked then I would stick to rehoming them to someone that can take on a bigger group of them.
 

BottomDweller

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Peppered cories need to be in groups of 6+ and need cooler water thaan the angel too
 
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