Hi all, I'm new to the forum and to aquariums. I originally got it for my cat, but she could care less, and I care a lot I've been thru all the "new hobbyist" crises, and already have a "nursery" with babies. One male and 2 female mollies. One of the females is shimmying and has a red "sore" just behind her gills on each side. I've only tested the amonia/nitrite/nitrate so far. Need to get a pH test and am waiting for salt and a thermometer to come in the mail. Is this something obvious that I can tell my local fish store (not PetSmart), and they'll know immediately? Or should I try to take a photo or draw a picture for them. The troubled molly female is pale gold. The other 2 are dalmations. TIA, and very glad to find a helpful group to get me thru these little crises. If I should post this in the beginner forum, pls let me know. I wanted to say "hi" and relate the problem at the same time.