swollen area on Rummy Nose Tetra

[tomherndon]

one of a school of 5 rummynose has developed a raised area just caudal of the gill plate/pectoral fins on the right side. It looks lighter in color as light reflects differently off of it.

At first I thought there was a (infectious?) growth on the surface. Then after staring at the tank for a while did I realize it was a raised area. None of the other four show any similar changes.

Seems more internal than external, but not 100% sure. No major changes in behavior - it is schooling and slinking through the hornwort like the rest of the gang.

any ideas or critical questions I should also be asking?

 

[Zagz]

There is a list of questions here that would help us help you, also if possible a picture.

 

[zenkatydid]

Sounds like it could be a tumor :/

 

[tomherndon]

follow up

whatever it was, it faded and I can't even tell which of the five was the aflicted RN tetra at this point. . .

keeping an eye on the school. . .