Tiger Barb with odd growth/wound?

[Major Misfit]

Hello all, new to this forum.
I have a tiger barb with an odd growth/wound near its tail. This fish is new to my tank (it has been up and running for 3 months and has fully cycled). This fish I got with a group of 6 others tiger barbs. They all spent a week in my quarantine tank and all showed no obvious issues or illnesses. I did not notice the issue in the QT.
They were introduced into my main tank two weeks ago, and I noticed this issue with the one fish about a week ago.
Water parameters are as follows, ammonia 0ppm, nitrites 0ppm, nitrates 10ppm, ph 7.5, temp 78 f. Water changes are approximately 10 gallons once a week (55 gallon tank). Tank mate's are 15 other tiger barbs (between 1 to 1.5 inches in length) and one 5.5 inch rainbow shark.
The fish is showing no signs of illness, swims just fine and stays with the main group. I have seen nothing in terms of aggressive behavior towards this fish, and it is part of the feeding frenzy with the rest of the barbs.
Only chemicals that are added are prime and kordens fish protector during water changes.
Here is a pict (took me two days of trying and this is the best I got.

Is it just a wound or something else?

 

[Colin_T]

Hi and welcome to the forum

Any chance of a better picture where the fish is in focus?

It doesn't look like a parasite so could be a lifted scale, physical injury or a bit of fungus. Need better pictures to be sure.

 

[Major Misfit]

Got some better pictures out of water, hope this helps.

 

[Colin_T]

Pictures of fish out of water don't help because the issue changes when out of water. Just try to get pictures like the first one you posted in the original post, but in focus.

 

[Major Misfit]

Well, I gave it another go... and here they are. Not much better, imo. At least the TB is not camera shy.

As far as the TB goes, still showing no odd signs of illness, no swimming issues and no eating issues.

 

[Colin_T]

no idea, can't tell what it is

 

[Major Misfit]

no idea, can't tell what it is

Tried for several days to get better pictures but they all end up the same. So I'll just monitor the fish and see where this goes.

Thanks for giving it a shot.