Can someone help identify this visible infection

[kelman]

Hi my flowerhorn develop this infection on his lower lip. How can I cure it?

 

[Rocksor]

What's the readings for ph, ammonia, nitrite, and nitrate using a liquid test?

 

[Charney]

something he can injure it on or fight? I would start with clean water and salt. if that fails and seems to not be working try topical betadine daily.

 

[tarheel96]

It looks like a wound that got infected. I like the advice above. There's also cloudy eye so baths could help this.

Keep us posted on this. I'd like to hear how it progresses.