Long fin leopard danios and long fin blue danios ripping fins off tank mates

[Goldenburd]

Hi guys i recently got 4 danios and they have been terrorizing the 10 gallon i started to notice that one of the danios attacking the neon tetras , rasbroas and the other tank mates. Theres one danio that their fins are ripped apart and so chunks are missing (photos of that will be posted). I removed the aggresive danio and put him in the 2.5 but tgat didn't work. Im wondering if i should put the 3 that are left in the 2.5 gallon till i can return them to the fish store. But im concerned about the guppies in the tank. And im not sure what to do with the injured danio.

 

[Goldenburd]

The leopard danio is being the aggressive now after i removed the other aggressor. Im worried about the other tankmates health (Video couldn't be uploaded the video was a video of the danios ripping fins of the neon tetras and the rasbroas this is not normal tag chase I've seen with other danios this is not playing its mire harsh. Im about to put them back in the quarantine tank but the cichlid is in there.)

 

[fishhead0103666]

If you want to upload a video then you can upload it to YouTube first then link it here.

 

[Aquadog]

What's you temp in the tank? You can try dropping your temp a few degrees. I heard Danios can be bullies during spawning, so maybe you have some breeding going on.

 

[Goldenburd]

What's you temp in the tank? You can try dropping your temp a few degrees. I heard Danios can be bullies during spawning, so maybe you have some breeding going on.

Tanks 70 or 72 don't know what the preset temperature is

 

[Aquadog]

Tanks 70 or 72 don't know what the preset temperature is

I think that's already low for the fish. I wouldn't go much lower.

You can also try rearranging you tank and drop your problem fish in last. Might help.

 

[Goldenburd]

What's you temp in the tank? You can try dropping your temp a few degrees. I heard Danios can be bullies during spawning, so maybe you have some breeding going on.

I think that's already low for the fish. I wouldn't go much lower.

You can also try rearranging you tank and drop your problem fish in last. Might help.

70-74 isnt low