Fish ID please

[Havard]

I would appreciate an ID on this aggressive resident..who snuck into my new tank with a batch of otos.
Thanks

 

[Colin_T]

looks like a young female emperor tetra (Hyphessobrycon palmeri) but could be a young kerri tetra (Inpaichthys kerri)

 

[Havard]

Thanks Colin. I don't have any of those species in my other tanks, so should I get a few more to calm it down or remove-euthanise? The status quo isn't acceptable on the other tank mates..the only resident who isn't bullied by it is my male Betta

 

[Colin_T]

You could take it back to the shop where you got it from or get more of them. They need to be in groups of at least 6 (preferably 10) or more. Depending on the tank size (length x width x height) and water chemistry (pH, GH, KH) will determine if you can keep that species in the aquarium. They need a minimum size tank of 30 inches long and 3 foot or bigger is better.

The reason it seems angry is because it's a schooling fish and is stressed out by being on its own.

 

[Havard]

Thanks Colin. I'll head back to the shop and see if I can pick up 5 more, then add them all to my larger community tank. It's currently in a new Flex setup 60l