Help, very off puffy cheeks on tassled filefish

[3.99AfterTaxes]

Just got back from the weekend to find my filefish's face swollen. I've never seen anything like this before. The rest of the tank is healthy and stable.


Tank details
- 5 years old
- water quality all test fine, negligible po4, no3, etc
- corals all look fabulous
- other fish look perky
- string filtration, tank is always clean, barely even builds up a film of diatoms over two weeks
- filefish's has been in the tank for over six months and is well integrated into the population

Please help! TIA

 

[Jdub968]

Is his breathing normal? Parasites can cause swollen gills was your fishes Qt'ed ?

 

[3.99AfterTaxes]

Breathing is normal. Fish we're QT'd with no new additions since he was added. This was an overnight swelling event, not a slow buildup.

 

[Jdub968]

If breathing is normal he's eating ok and there's no ammonia in the water I would probably dose stress guard and watch him. Stress gaurd has an anticeptic in it I really like the stuff.

 

[3.99AfterTaxes]

Hmm, starting to wonder if it's a Lionfish sting. Ever experience that on another fish? There's two dwarf Fuzzies in the same tank.