Injured Cory, Or Disease?

[Kirahn]

One of my Cory catfish looks to have an injury, not sure how it happened. Any advice on treatment?

 

[Coptapia]

A bactericide or fungicide to prevent infection. And good water, of course. That should be all you need...

 

[Kirahn]

Ok that's what I was hoping. I was concerned that it might not be an injury, it's the first time I've dwelt with a bleeding fish and I wasn't sure if a parasite or something else might look the same.