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Not sure..

Been working late last 2 weeks. Last week my rabbit faced fox fish died. Don't know why. Found his remains. Today my yellow tang is got bruises on his sides. Hiding. Tank is a 150. Everything has been ok on levels. Just figured if anyone had any ideas. Been doing water changes every couple of days. Can't get tang into quart. Tank. He's in the rocks. Don't want to stress him. I know I'm gonna sound lame but my fox fish was his best friend. Tank is a year old. I don't dose just use good salt keep it clean and spiffy. Tho i don't do so hot with hard corals.... I'm babbling.
 
http://i1157.photobucket.com/albums/p600/chrisgarrick/15f49985.jpg
Here is a picture of my fish. Not pictured 4 clowns and a fairy wrasse. In the background of the picture is a partially hidden is a tang that I can't remember the name for. Today the yellow is eating. It's sail is staying down and part of it is ragged. The other black and gold tang has its sail up stiff all the time. He was brought in as a smaller fish. He is now the same size as the yellow tang. They have been getting aggressive towards each other. But I was worried about the black and gold fish. Yellow has his defense knives on his rear sides
At least he is eating.
 
The tang in the rear looks like a Desjardini Sailfin Tang. These fish can become aggressive, and will become very large...~16". Your Blue can get to 12", and Yellow to 9", so you might want to consider re-homing the Sailfin. All members of the family [SIZE=-1]Acanthuridae ("thorn tail")[/SIZE] have those spines on either side of the tail, so it's possible what you're seeing are small wounds from their confrontations, more visible on the yellow.
 

mnat

Officer Emeritus
Staff member
Moderator
Also what size is your tank? That rabbitfish can also cause some damage as well. However, I agree with Jim that is is probably your tangs doing battle.
 
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