Neon Tetra Disease?

[Patrick Nugent]

Hello everyone,

 

I have a small 20 gallon long quarantine tank that is the temporary home to some rummy nose tetras and neon tetras who are in their 3rd week of quarantine. I noticed exactly a week ago that one or two rummy nose tetras had slightly damaged tail fins so I treated everyone with a 2nd round of Maracyn to be safe. Fast forward to the middle part of this week and I noticed that one of my neons looked somewhat discolored and a little skinny compared to the others. I’ve never dealt with neon tetra disease before, but I’ve read a good bit about it. Any ideas if I’m dealing with a neon that suffers from this? The neon in question is acting normal, eating fine, swimming like the others, and stays in the schooling with the others like nothing is going on. Also, all fish now seem to have healthy fins and look great. 
 

I will 100% be waiting at least another week before moving the tetras to my 65 gallon community tank, but I’d like to know if I should do something with this one individual neon before then. 

[Tony s]

You have good parameters numbers?  Neon tetra disease is out there. But it’s not terribly common yet. It’s also contagious and not treatable. So if you have it in one it’s probably in all. 
 

the next question is where you sourced them. Neons tend to be rather fragile. From being over bred. The genetics have gotten really weak. Usually I lose upwards of 60%. If they can survive the first 6 weeks they should be fine afterwards. But the problem is getting them there 

[Patrick Nugent]

On 3/24/2024 at 2:30 PM, Tony s said:

You have good parameters numbers?  Neon tetra disease is out there. But it’s not terribly common yet. It’s also contagious and not treatable. So if you have it in one it’s probably in all. 
 

the next question is where you sourced them. Neons tend to be rather fragile. From being over bred. The genetics have gotten really weak. Usually I lose upwards of 60%. If they can survive the first 6 weeks they should be fine afterwards. But the problem is getting them there 

Parameters have been good and have done a 25%-30% water change in back to back weeks now. I got them from a local fish store in my area (had never shopped there before buying these tetras). I’ve surprisingly kept all alive so far. Good point about if one has it then all probably already have it. I was thinking about culling the one individual but I could just wait another week or two to see if the others start to show similar symptoms. I unfortunately don’t have an additional tank or spot to set one up to evaluate the one fish either and I’m not sure if there’s a point if all the other have been exposed for a number of days now. I think I might just do another dose of Maracyn another week to see if that does anything in case it isn’t NTD. 

[Patrick Nugent]

On 3/24/2024 at 2:30 PM, Tony s said:

You have good parameters numbers?  Neon tetra disease is out there. But it’s not terribly common yet. It’s also contagious and not treatable. So if you have it in one it’s probably in all. 
 

the next question is where you sourced them. Neons tend to be rather fragile. From being over bred. The genetics have gotten really weak. Usually I lose upwards of 60%. If they can survive the first 6 weeks they should be fine afterwards. But the problem is getting them there 

Parameters have been good and have done a 25%-30% water change in back to back weeks now. I got them from a local fish store in my area (had never shopped there before buying these tetras). I’ve surprisingly kept all alive so far. Good point about if one has it then all probably already have it. I was thinking about culling the one individual but I could just wait another week or two to see if the others start to show similar symptoms. I unfortunately don’t have an additional tank or spot to set one up to evaluate the one fish either and I’m not sure if there’s a point if all the other have been exposed for a number of days now. I think I might just do another dose of Maracyn another week to see if that does anything in case it isn’t NTD.