Naso Tang Issue

viper3166

New member
Yesterday morning I noticed my naso tang was not active as usual so when looking around I did find him hiding in one of the rock works and he had some white marks near his mouth. he did not eat when feeding and his movement was very fast swimming from hiding spot to hiding spot. This morning he is swimming around so I was able to get some sort of pic isn't the greatest but hopefully someone can help me figure out what this white is? did he run into rocks? Thanks in advance!!
 

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Hard to tell. Is that a cottony patch on top or is the skin gone? Just from looking at the picture, it looks like an amoina burn that I've seen on a fish I had, or HLLE.

But you say you've had him for several years so one would think that shouldn't be the case. I'm not sure how fast HLLE spreads though.

Did he get into a fight with another fish?
Was he running in and out of the rocks and possibly scratched himself? I know I've seen that before on my large pink tail trigger trying to get into small places in my rocks.
 
To the best of my knowledge I don't think he got into a fight, all the other fish seem fine with no marks. The Naso runs the tank and none of the other tangs or foxface attempt to fight the naso. Powder blue and hippo or purple may chance each other once and awhile but nothing full on fight. it's hard to say about skin gone, kinda looks maybe something eating the skin but I will try and get better pics after work. not eating is my main concern. did swim at the food but didn't eat.
 
Is the lesion progressing and are the margins frayed? It does look like lateral line disease however that condition usually doesn't start there but rather behind the eyes. Also, this is a bit acute. When theres an ulcer like that I always worry about the ciliated protozoan, uronema. It's opportunistic and present in some reef tanks laying low. When your fish gets a scratched or the slim coat is worn away, the little buggers can get in. Another possibility, and also from cuts/slime coat compromisation, is an infection from the ambient gram negative bacteria such as vibrio and pseudomonas. Maybe watch for a few days to see what happens. Happy healthy fish might fight off infection. If things take a turn for the worse, I would try to get the fish out and treat. If you can scrape the area with a cover slip and look at it under a icroscope you'd know right away if you were dealing with a protozoan. If not, you could try a gram negative spectrum antibiotic like kanacyn (kanamycin).
 
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