single white spot on Barracuda

[TRD_Power]

My Yellowtail Barracuda was recently attacked by my Needle Nose Gar and it shredded up his dorsal fin a bit. Anyways, I used Melafix for 4 days, using only half a dose each time due to him being a shiny, overly-sensitive fish. Well, today I put the carbon packs back into my filters (did a 30% water change yesterday) and noticed that the dorsal fin has healed, but now there's a single white dot in the middle of it :/ ammonia and nitrites are all at 0 ppm and nitrates are around 5 ppm. The room he's in has VERY minimal activity, all sides and back of the tank are blacked out, and he's pretty much stress free. I know the treatment says to go 7 days, so do any of you think that the fact I cut it short could have caused a problem? He isn't breathing hard or anything yet. All and any input would be greatly appreciated!

Thanks

 

[TRD_Power]

Anybody? :/

 

[cudamaster13]

My Yellowtail Barracuda was recently attacked by my Needle Nose Gar and it shredded up his dorsal fin a bit. Anyways, I used Melafix for 4 days, using only half a dose each time due to him being a shiny, overly-sensitive fish. Well, today I put the carbon packs back into my filters (did a 30% water change yesterday) and noticed that the dorsal fin has healed, but now there's a single white dot in the middle of it :/ ammonia and nitrites are all at 0 ppm and nitrates are around 5 ppm. The room he's in has VERY minimal activity, all sides and back of the tank are blacked out, and he's pretty much stress free. I know the treatment says to go 7 days, so do any of you think that the fact I cut it short could have caused a problem? He isn't breathing hard or anything yet. All and any input would be greatly appreciated!

Thanks

with me its the opposit my yellowtail cuda attacks my needle nose mainly at feeding time could be nothing but if more spots show up it could be ick