Robsnr318

Ok thanks!

Ok. So if I remove the neons, what would I need to do and/or how long should I wait to add fish to this tank? No neons have died, so no others have eaten any of the infected fish.

Ok, do you happen to know if this course of treatment is safe for the kuhli loaches the otocinclus? I know I'd have to remove the cherry shrimp, mystery snail and any ramshorns I want to keep, but not sure about those other sensitive fish. I'd move just the neons to a hospital tank, but if the tank water is "infected" they'd be reintroduced as soon as I put them back in, right? I'm also just confused about how it would be bacterial or fungal without spreading to any other species whatsoever. I can understand all the neons getting it since they were all bought together - if it's Neon Tetra Disease, makes sense that they'd have it but not spread to others in the tank since they haven't died and been eaten. I feel like any bacterial/fungal infection would've spread to at least one other tankmate species or have killed at least 1 neon by now. This is all so confusing!

Would it be columnaris if it's been this long without noticeably affecting how the fish swim/eat and not spread to any other species in the tank? I'm definitely open to trying the meds you did, just want to make sure I'm treating the right thing. Thanks!

Ok, so I've had 6 Neon Tetras since the beginning of January (all bought together from a big box pet store). Around March I noticed one of them starting to get the whitish "saddle" marks but was otherwise acting and eating perfectly normally. At the time, none of the others had any white on them. Over the following few weeks, more of them showing white, but the original hasn't had much more progression. Now about 3-4 of the 6 look like the one in the two pictures here. None have died, they all eat, swim, and school well - though some do go off on their own, and I usually have at least 1-2 hiding under a big cave/rock thing. Towards the end of March, I did a full week of Maracyn and Ich-X in hopes of treating a potential fungal infection - but there was no improvement in any of them. I also used the meds to treat a Green Fire Tetra with pretty severe Popeye (thinking it was an injury) - that also showed no improvement with meds but he's been acting/eating normally all this time too. I have a betta, 3 black kuhli loaches, 4 white cloud minnows, 1 otocinclus (her friends died), 3 green fire tetras, 6 neon tetras, and a lone survivor red cherry shrimp in this community tank - along with a mystery snail and some ramshorns. Nobody else is showing any signs of anything (betta has a little bloat, but daphnia help that). I have my parameters below. So the question is, does this look like Neon Tetra Disease or some type of fungal infection? I have the med trio and a few other things I can use to try and treat them, but should I bother if they aren't dying? I also added the oto(s) after the last course of meds, and I have some concerns about medicating the tank since I read they are sensitive to some. Help? Temperature: 78 pH: 6.8 Ammonia/Nitrite: 0 Nitrate: 50 (it's water change day, but also heavily planted tank) GH: 300 KH: 80