Purple tang spots

Davesreef’s · 2026-08-21T20:48:05-0400

Hey all got this guy not too long ago, there’s some with spots on the one side of the fin, just wondering if it is anything to worry about. Or anyone can help me identify what it is, my blue tang has been chasing the purple around a little bit and maybe it was from running into rocks or doesn’t look like ich?

Mr. Mojo Rising · 2026-08-22T08:23:31-0400

Its hard to see the spots, but #fishmedics should be able to help you

W31Olds · 2026-08-22T08:32:57-0400

The white spot may be lympho. That is usually not a concern, however there is something seriously wrong with your Purple. He looks thin and the labored swimming is a problem. I would isolate him in a Hospital Tank right away and post some additional pics. Has he been eating and was he QT'd?
@Jay Hemdal
@vetteguy53081

vetteguy53081 · 2026-08-22T09:24:51-0400

Davesreef’s said:
Hey all got this guy not too long ago, there’s some with spots on the one side of the fin, just wondering if it is anything to worry about. Or anyone can help me identify what it is, my blue tang has been chasing the purple around a little bit and maybe it was from running into rocks or doesn’t look like ich?

This fish is a little thin and due to what looks like a cyst, is causing the fish to struggle with swimming. I recommend quarantining in a separate tank and apply Seachem kanaplex as treatment with air stone added and watching ammonia levels with a reliable test kit. While this represents Lymphocystis, its in an unusual location with lympho often starting at upper fins but may be Columnaris