Betta with owie on head

[lighting13]

I'm not sure if this is just a open wound but the only new thing I added was a mystery snail to tank and the 24 hrs later I see this wound . I'm not sure if maybe he cut himself or infections from snail. My other  betta has a small red spot and my 3rd  is fine. Help please . He is eating and swimming Still. I'm treating with nelafix

Edited April 28 by lighting13

[Whitecloud09]

On 4/28/2024 at 4:42 PM, lighting13 said:

I'm not sure if this is just a open wound but the only new thing I added was a mystery snail to tank and the 24 hrs later I see this wound . I'm not sure if maybe he cut himself or infections from snail. My other  betta has a small red spot and my 3rd  is fine. Help please . He is eating and swimming Still. I'm treating with nelafix

Ow, that looks like it hurt, @lighting13, I see artificial plants in the tank, are there any sharp pieces of decor/plant in the tank, might be he just got injured from something sharp.

[Guupy42]

I don't keep Betta fish, but I have had a guppy with something similar. I later found out that it was an ulcer with a fungal infection, so look for signs of those. As for the treatment and symptoms, I found this detailed article that may help with Betta ulcers. It might or might not be that kind of injury for sure, but it is just another possible idea. 

https://www.bettafishfacts.org/ulcer-on-betta-fish-causes-treatments/