I have a planted 29 gallon tank with neon tetras, xray tetras, cory cats, and an Amano shrimp. I have not had any fish related illnesses since I set up the tank about 9ish months ago. I haven't added any fish or plants in about 4 months. In that 4 month span I have only added water, fertilizers, fish food (including frozen blood worms) so I can't imagine that this is a newly introduced pathogen.
Approximately a week ago I noticed one xray tetra had developed a relatively large (a little larger than it's eye) light pinkish cyst/tumor above its spine near its tail. It grew daily. The tumor was oval shaped. I could only tell something was there because I could see through the fish's body as it is a x-ray tetra. Then about 2 days ago the tumor burst out of one side of its body. Yesterday it burst out the other side (the tumor actually ruptured the skin/scales of the fish. The fish appears to be able to swim normally when food is offered. However, when there isn't food, it hangs out in the back of the tank out of the current for most of the time (to seemingly avoid having to swim).
I apologize for the poor pictures.
No other fish appear to have any similar issues and the other x-ray tetras have no visible tumors inside their bodies.
What is the diagnosis? Is it infectious? Can the fish be saved?
Thank you
Approximately a week ago I noticed one xray tetra had developed a relatively large (a little larger than it's eye) light pinkish cyst/tumor above its spine near its tail. It grew daily. The tumor was oval shaped. I could only tell something was there because I could see through the fish's body as it is a x-ray tetra. Then about 2 days ago the tumor burst out of one side of its body. Yesterday it burst out the other side (the tumor actually ruptured the skin/scales of the fish. The fish appears to be able to swim normally when food is offered. However, when there isn't food, it hangs out in the back of the tank out of the current for most of the time (to seemingly avoid having to swim).
I apologize for the poor pictures.
No other fish appear to have any similar issues and the other x-ray tetras have no visible tumors inside their bodies.
What is the diagnosis? Is it infectious? Can the fish be saved?
Thank you