I have two JD's in with about 10 other fish and about a week ago I noticed a tiny small brown spot protruding from one side of their tails. I did a 50% w/c and added some salt. Now the spots have doubled in size but are too small for me to get a pic of. Any one have any idea's as to what these may be? They havent moved, or multiplied and are about the same size as a 1/4 of a grain of rice. I searched all over this forum and didnt find anything similar to this at all. Thanks guys.