Is This Finrot?

[TF Keeper UK]

Hi, this is a pic of one of my Bronze Corydoras. On the base of the dorsal fin is what looks like a growth of some sort. Has anybody any ideas as to what it could be?

 

[WILDER]

Does the growth look life a fluffy patch.

 

[TF Keeper UK]

it doesn't look fluffy, more snot like! She's had it for quite a while now.

 

[WILDER]

A white patch then can are prone to bacterial problems, and white marks can be bacterial, what are your water stats in ammonia,nitrite,nitrate,and ph.
I would preform a water change on the tank, can you issolate the fish as it will need a med.

 

[TF Keeper UK]

The stats were ammonia 0ppm, nitrite 0ppm, nitrate 10ppm, pH 7.6 and water temp of 25.9ºC as of this morning. I've noticed the mark on this before Xmas.

 

[WILDER]

White marks like that can be bacterial or parasite, but corys are more prone to bacteria infections than parasites, i would get the fish on a bacterial med, the barbels look fine to me, have you noticed any difference in them, going shorter or thinner in appearance.

 

[TF Keeper UK]

Haven't noticed anything out of the ordinary. In fact she is one of the biggest Bronze Cory I've got!

 

[WILDER]

I would try anti fungus and finrot med first, if it's not bad that should clear it up, good luck.

 

[TF Keeper UK]

Thanks Wilder, I'll do that.