Hey guys! So I've had this red spotted sevrum for nearly 6 months now and he has always had odd spots on his fins (it wasn't ich or anything I could find) so I wasn't to worried, well today I noticed a rather large spot on his left front fin.
He's eating fine, being his normal self as far as I can tell, so what in the world is it and should i be worried?
He's in a 75 gallon tank (I'll attach a picture of that as well)
Thank you all in advance!

He's eating fine, being his normal self as far as I can tell, so what in the world is it and should i be worried?
He's in a 75 gallon tank (I'll attach a picture of that as well)
Thank you all in advance!



