I agree. I believe it may be velvet also. I was working with the storm and was not home for a few days and I came home to this. The rid ich treated it, but I do believe it to be velvet also. The other loaches had some spots on them and one much more than the others. However, they all cleared up. Ill dose some ant-bacterial stuff today...suggestions as to what you use?
Your lucky you did go to an aggressive medication first, or you possibly could have lost many more fish.. Velvet is nasty.. And gets worse if you raise the temp and salt does nothing...
And erythromycin is a good one.
Sent from my iPhone using MonsterAquariaNetwork app
