Stressed Hippo Tang?

[CJM1224]

I have a 58 gal Oceanic, with a blue hippo. Recently, the tang seems obsessed with swimming up and down the front corner of the tank. I am wondering if he has outgrown the tank? Any thoughts would be helpful!

 

[fcamargo6thave]

Regal tangs are known to stress very easy and swimming up and down is a symptom of stress in a tank which also can mean he just swimming hehe but in order to make sure just monitor the tang and make sure he eats well and if you see him twitching or swimming in one spot then it is defintely stressed and watch for ich which can break out quick if it is stressed. Have you recently done or introduced anything new to the tank or has there been a fluctuation in temp

 

[CJM1224]

I added a copperbanded butterfly to control an aptasia outbreak. The tang is about 5", it was a rescue from an aggressive tank. I feel like the tank is too small for it.