Scale problems with Zebra

[Aries]

Problem: My male Zebra has protruding scales much like he is molting or been in a fight. His behavior is still normal and eats aggressively. Is this the bacterial scale protrusion disease? None of the other fish seem to have these problems. Also, what should I do to help alleviate the problem?

Below is the website where I tried to take some pics.

My Pictures (http://photos.yahoo.com/bc/james.sanders989@sbcglobal.net/lst2?.tok=bcbzMyRBICcEZ4LP&.dir=/My+Photos/Fish+Scale+Problem&.src=ph)


Specs:
30G
Fluval 404 1/2 capacity
96W CF light
moderate plants with co2
3 Zebra (1M 2F)
3 Labs (1M 2F)
5 SAE

Measurements:
PH 7.6
Ammonia = 0
Nitrate = 0
Nitrite = 3PPM
KH = 16
GH = 18
Normal for this tank

Doses:
1/2 TSP KNO3 (Stump Remover - Greenlight) 3x a week
1/4 TSP Nu-Salt 1x a week
Add 4ML Iron 1x a week
Add 4ML Trace 1x a week

Any help will be greatly appreciated

Thanks

[Andy16]

The only disease that i know of is dropsy. If im right, the disease will spread and infect the other fish. I would put it in a hospital tank and wait until in goes away.