Redness on Danios

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Todd2

Aquarium Advice Freak
Joined
Sep 20, 2003
Messages
493
Location
Pennsylvania
There is redness on 2 out of my 3 Danios. The redness is near their anal fins and anus. What is it and is it bad?
 
It *could* be a sign of parasites or infection. It *could* be nothing of the sort. Are their fins clamped? Or do they seem to be scratching on objects in the tank? Any other changes in behavior/coloration? And, as always, check your water parameters.

Look closely at the reddened areas and see if there is anything there that doesn't look like it belongs.

They may be displaying their breeding colors? What species are your danios?
 
My male danio "gets red" around that area when he's in the mood for breeding :lol: Then he returns to normal after he's done his chasing for a while.
 
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