Yellow Tangs with fin & tail rot ?

[chinookgirl]

I have 2 Yellow tangs that I just noticed their fins and tails are frayed. Could this be fin rot or could my Blue Devil Damsel be getting nippy with them. They have all been together for about 6 months now with no problems. Help

 

[downbeach]

I have 2 Yellow tangs that I just noticed their fins and tails are frayed. Could this be fin rot or could my Blue Devil Damsel be getting nippy with them. They have all been together for about 6 months now with no problems. Help

How big is your tank? Do they seem to be getting aggressive toward each other?

Here's some info about fin rot:

http://www.chucksaddiction.com/disease.html

 

[chinookgirl]

90 gal. Never saw any aggression before, but not taking anymore chances. One fish is not worth the rest of my fish. the Damsel will be coming out of the tank today. I hate to do it, but I have no other choices.

 

[TylerHaworth]

what are you feeding?

 

[MrTuskfish]

90 gal. Never saw any aggression before, but not taking anymore chances. One fish is not worth the rest of my fish. the Damsel will be coming out of the tank today. I hate to do it, but I have no other choices.

Damsels are usually a PITA. YTs are very tough fish and the fins should heal, if it was caused by the damsel. The link posted by downbeach above should tell you how to treat if it F&T rot, not a battle scar. F&T rot looks "rotten" on the edges.

BTW, I'd expect these two YTS to go to war as they grow. They seldom do well in groups of two, tangs of this genus usually hate each other and 90 gal isn't much room. Oddly, they're usually OK in groups of 3 or more, but you don't have room.