Giant Danio sick or breeding?

[chovey]

So im new at aquariums. This is my first. I have a 40g with 5 Giant Danios. They all are getting red fins. Im concerned. Their anal fin and tail is getting bright red. Advice?

 

[Cecibella123]

Mature male giant danios can get an orange or red coloration in their anal and caudal fins. Nothing to worry about.

 

[Harry Vysekal]

They do have, I notice that in my danios breeding group as well, transparent flaming orange clour like on their fins, mainly danios mate very single morning when the sun comes out, they are like rabbits, was cleaning tank back before I Had only 4 to find 30+ fry after weekly cleanup


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