We have 13 black neon tetra along with other fish none of whom currently have this problem in a 30-gal tank. The tetra have been in the tank for 3 months. Just yesterday we noticed about half of the tetra looked as though they had tiny bubbles on parts of their bodies. Today the condition doesn't seem to have inproved.
Is this some sort of disease; and if so, what steps should we take to cure the problem? Thanks.
Thanks!
JJW