[jsap]

Hi, I'm new to the forum, so I'm not sure if I'm asking this in the right place, but I wanted to know if anyone knows what (if anything) is wrong with this fish. I noticed this white "lump" or spot INSIDE the fish ( you can see through its skin and this spot is clearly not on the outside of the fish) that is not present on any of the other fish.

It doesn't seem to be swimming or acting weird, and it eats normally.
This is in a 17 gallon planted tank. The tank is about 5 months old, and the rummynoses have been in there for about 5 weeks. The water parameters are good, 0ppm ammonia and nitrite, and about 5ppm nitrate. The tank has great filtration and flow and I'm running pressurized CO2 for the plants, but none of the fish (rummynose and cardinals + 2 otos) have shown any sensitivity (gasping, lethargy etc) so I believe I've got that dialed in OK.

I feed the fish a small amount of TetraMin flake crushed up once per day.

Sorry for the picture quality, I had to catch the little guy in a glass to get a good enough picture.

So what's the deal? Does this fish have a tumor? Parasite? is it just constipated?
Has anyone seen their fish like this before?

Thanks for any advice!

 

[thekoimaiden]

I'm sorry it's taken us so long to get back to you.

Does this fish seem unduly gluttonous? The reason I ask is because I had a cardinal tetra that was more vicious in going after food than most of the others (he would go after the food for the substrate fish, too). As a result, he constantly overate and developed lumps on the inside. Eventually something caused it to die.

Honestly, if everything seems okay, I would just let it be. Your parameters sound good. Sometimes fish are just strange. If you see this fish making unusual-looking poops then it could be a sign of something wrong. But other than that, I'd just let it be.

 

[npbarca]

Well it is definitely looking pale, not really sure what the lump is. Just watch him for a few days.

 

[aorihanazari]

Bump! I have a similar issue! Looks like the post is from 2013, so, if you remember, what happened to the tetra in the end? The spot on mine is growing and turning darker. I think it’s some kind of fungus but I am not sure. I tried searching online but was able to find only your image that looks similar to mine. It started off as white but now the spot’s darker. Any help would be appreciated!