Rasbora dorsiocellata problem

[palaeodave]

Hello. One of the R. dorsiocellata has suddenly developed a circular red blotch under its skin. It has become very pale and lethargic. I fully expect it will be dead within 24hrs but I just want to check what it might be.





The pictures don't really show just how red and bloody-looking the patch is. Any thoughts?

[shari2]

internal injury.
probably due to either tumor or parasite. i can't see that there might have been an external cause...

fish still with you?

[chefkeith]

I'd get it out of the tank and into quarantine. Regardless of what is wrong with the fish, you don't want any fish dying in a main tank. Dead fish are toxic.

[mickthefish]

i'd go with a tumour, and as far as i know there's no treatment were able to buy for it.
agree you should q it away from the others.

mick

[palaeodave]

Thanks guys. Amazingly it is still alive but looking terrible. Setting up a Q tank for the sake of prolonging the short, miserable existence of one doomed fish doesn't really make sense, so it's going to have to be euthanasia I'm afraid.