Red eye tetra tail diseased or damaged?

[Mick85]

Just noticed the tail of one of my red eye tetras is damaged. Does anyone know what this is? Could it be an injury or disease?

 

[Colin_T]

maybe fungal or bacterial.

add 2 heaped tablespoons of rock salt and keep it there for 2 weeks. see how it goes. if it gets worse, post more pics/ video.

 

[Mick85]

maybe fungal or bacterial.

add 2 heaped tablespoons of rock salt and keep it there for 2 weeks. see how it goes. if it gets worse, post more pics/ video.

Add the salt straight into the tank? Tbh I've never had to treat a sick fish before and i don't have a quarantine tank.

 

[Essjay]

Take some water out of the tank, dissolve the salt in that, then pour it back into the tank.

 

[Mick85]

Take some water out of the tank, dissolve the salt in that, then pour it back into the tank.

Thank you