Yellow Tang fin rought?

Click to enlarge!
Pictures fish with ich or fin rot I do not know please help.
Best picture I could get of his top fin. Not sure what it is looks like he is growing it back I do not know though...Top is a white color and where its white it is pretty thin.

Brief description of the problem.
A picture(s) will also help.
PARAMETERS (important)
Temperature:78.6
PH:8.1
Ammonia:0
Nitrite:0
Nitrate:10ish
Salinity:1.25
dKH/KH/Alkalinity:
Magnesium:
Calcium:
Phosphate:
Test kits you own:API
Liquid or Strips:Liquid
Brand Name:API
Are they Expired?:No


Tank size?90g
Estimated total system?Do not under stand...No sump if that is what it is asking.

Reef, fish only or, freshwater?Mixxed but atm its just LR and fish

Current inhabitants?
What and how many?
Clean up crew?
Hermit Crabs 25ish, Snails 6ish, Feather Duster1, Peppermint Shrimp1, Skunk Shrimp 1, Yellow tang, 3 chromos, 1 scooter blenny, 1 lawnmower blenny...everything else looks really good and eats well. The yellow tang also eats.

How long has your tank been set-up?At this location about 2 months bought it from a reefer that is done reefing was setup for a year +.

Substrate.
Type?aragonite not really sure on the specifics
Depth? 4-5inchs

Live rock?Mixxed
How much?120
Did you recently add some?No

Filtration.
Type?scrubber
Protein skimmer?no
Do you wet or dry skim?no
Maintenance schedule for filtration?3-5 atm
Drilled tank/hang on back overflow?no
Sump/refugium. What's in it and how much?no
Macro? What kind?

Lighting.
Lighting type? t5 tek fixture 8x54
Age of bulbs?New like today...

Feeding
What?Frozen Marine Cuisine, Myrsis Shrimp, flakes, Clove of garlic crushed in a separate bowl with little water then poor into with bowl containg all the food let soak add flakes feed.
How much?1/4 frozen cube of cuisine and myrsis shrimp and a sprinkle of flakes.
How often?morning and evening

Water change schedule.
How much?7G
How often?1week
What salt brand?Instant Ocean
Water source?

Additives/supplements used?Prime if ever needed

Do you have a ground probe?No
What kind of flow does your tank have?2 4Korila

Any additional info you would like to share.... Including anything different that you have done/not done.

Thanks for the help!



EDIT Just saw "rought" was spelled wrong its Rot

 

The Fish looks pretty skinny to me, like it has an internal parasite. You say it's eating but if there are intestinal worms the fish isn't getting the nutrients. The fin is the least of it's worries, IMO. You can get some Metronidizole from your LFS or On-line and (this is important) feed it to the fish. Here's how I do it:

1) Thaw out 2 Cubes of Emerald Entree (because it has vegetable matter and is "mushy)
2) Add two doses of Metronidizole to the food (Seachem's version has a measuring spoon and I use two spoonfuls).
3) Mix well in a small container and refrigerate for two hours.
4) Feed the fish a small amount daily for 2 weeks.

After this you should see the fish fatten up a little (and the fin will probably grow back too). This fish is sick and you should act quickly.

 

Anyone else wanna chime in? Also would all my fish have worms then or just the one?

 

Bump. My Tank looks the same... Anyone?

 

The thread is from 2009, so I don't know if a bump is appropriate.

What do you mean by your tank looks the same? That first post is kinda long lol.

 

Well I figured it's better than starting a new thread. I mean my tang looks the same as that tang.

The fins are turning white, translucent. Noticed it today. It's not a stress issue. She's been in the tank a month. Params seem fine. 0-s across the board. I'm guessing parasite.