Hi I have just added triganostigma hengeli (copper harlequins) to my tank, and have noticed one of them has a small "red spot" on its side, I've had a look at it and it's about the size of a pin head and about the size of one of the scales. Is this something to worry about it? Is it damage from niping? or a sign of something more serious? Other than this the fish is acting normally and has good strong colours considering it was only added today.
thanks in advance
thanks in advance
