

Does anybody recognize this spot on my T. Abei? Sorry about the poor quality pictures. There is a darker patch of skin on his dorsal side with a white ring and a small lose object in the center.
-My first thought was that it could be anchor worm, but the dangling object does not look like the familiar worm of an anchor worm.
-My second thought was that it could be a mass growing or a blister, which broke the skin. Possibly even a wound from the driftwood? The white ring could be the skin peeling back and the dangling object could just be a flap of skin.
-Third thought was fungus, but it isn't really cottony.
Anyway, I picked up some triple sulfa to add to the tank to combat any bacterial infections that may be associated with it, but I don't want to use it if I don't have to.
Temp- 79F
Ammonia 0
Nitrite 0
Nitrate <10
Soft, Neutral water
20 gallon long with mopani driftwood and some plants. Tank has been up for about a year. I just recently did a 50% water change on it to clean up the recent green blanketing algae that has been covering the wood and plants, it may be cynobacteria but I don't know. The water parameters before the 50 percent were the same except my nitrates were at about 30ppm.
The only reason I am considering a parasite is because I was recently given a large ball of java moss and I put that in almost 2 weeks ago. It wasn't doing well so I removed it. I know the lady who gave it to me though, and I trust her to not knowingly transmit a parasite, but it may not be present on her fish and still be in her water.
Anybody? Thanks