Spot on side of Pygmy angelfish

[aurora.k]

No other fish look affected by anything - thoughts?

 

[aurora.k]

Ps he’s eating fine and swimming normally. My tank parameters are good

Sal 1.025
Ph 8.2
Nitrites / ammonia 0
Nitrates 20ish (a little high, I know)
Kh also a little low, 8.1 when I tested before I dosed kh buffer

 

[HotRocks]

Can you take pics under whites?

I see the spot, but with only one I would suspect the fish grazed a rock or something.

Have you recently added anything to the tank without QTing?

 

[Big G]

Until you can get us a picture without the blues running, here's a link you may want to bookmark on pictures of common fish diseases.
https://www.reef2reef.com/threads/fish-disease-index-pictorial-guide.285708/#post-3473098

 

[aurora.k]

Thanks - I don’t really think it looks like anything in that article (but I will refer to it in future). Perhaps an injury or, closest in the article, could be bacterial?

I turned off my kessils and added a white spotlight and I’m not sure it’s easier to see...

I did add a couple fish without full qt (just a week) because my qt tank was too small and they were getting too stressed. (I know, I know). Those guys do not have any white-ish spots.

 

[Humblefish]

If it moves/crawls over him, then it could be a monogenean: https://www.reef2reef.com/threads/flukes-–-general-guidelines.224423/

But if it remains stationary, it's probably just a cut, injury, or minor abrasion.

 

[WV Reefer]

No other fish look affected by anything - thoughts?

I had one that would get little scrapes all the time from squeezing into places she shouldn’t be.

 

[Toofattofish]

One of my fish has something very similar looking, in my case it was in all likelihood from scraping against a rock causing a minor abrasion.

 

[aurora.k]

Thanks, all! I am leaning toward scrape (it has been in the same spot all day). Both the cherubs are constantly slipping through little holes in the rock work that I didn’t even know were there so they are the most likely of my fish to scrape themselves.

 

[aurora.k]

Just an update here: I think it was an abrasion and the fish has been great ever since!