PLEASE HELP Imperator Angel

[hector]

Hello Everyone
Today I noticed my IMPERATOR ANGEL has a small cut on the lower left side (it is in the middle lower bottom of his body)like something is eating him from the inside, It looks bad it is about 4mm in length/1mm wide and I can see inside. He also started to get small white circle blotches about the size of a dime. I do not have a hospital tank. Is there anything I can do to help him. I was thinking of using Hydrogen peroxide on the cut with a Q-tip. He was eating fine before this happen, he has not eaten today. The only thing I noticed in my tank was it had an algae bloom (cyna)about 2 weeks ago.
My tank is 125gallon.....I have tested the water in my tank everything is perfect.
My stock consist of:
* Sm Red Sea purple Tang
* 2 SM Sebae clowns
* 1 Sm Red Sea Naso Tang
* 1 purple firefish
* 2 sm yellow belly damsel ( gregory)
* 1 sand sifting starfish
* 1 blue linkia starfish
* 150 turbo snails
* 100 Mexican red hermit crabs
* 1 emerald crab
* 1 horse shoe crab
* 1 Maroon clown fish
* 1 Pakistan Butterfly
* 1 Copperband butterfly
* 1 True Perc clown
* 1 Neon Dottyback
* 2 Cleaner shrimp
* 1 Boxing shrimp
* 180 pounds of live rock
* 4 inches of live sand
Please If anyone can Help..... Reply....As soon as I get a respond I will start Treatment.
THANKS EVERYONE

 

[mr . salty]

Did I count twelve fish?And that's not counting the emperor...Your tank is overstocked.This causes stress between your fish.They will battle for territory,and sleeping space.So my guess is that one of those tangs got him.The emperor will most likly heal on his own.But if you start seeing signs of infection you will need to remove the emperor and treat him with an antibiotic in a seperate tank...In the meantime you should think about thinning out the # of fish in that tank.This overstocking will cause alot of trouble down the road.

 

[gtc]

I agree with Salty. You are overstocked, what are your water readings? Dont take the emperor out and use peroxide it will stress him. If your water is clean meaning 0-5 ppm nitrate keep feeding him he should be ok if it is just a gash. Keep your water clean with water changes every few days till he is better. Reduce your fish load to reduce waste and chance for infection.