my red oscar and my albino have settled with the whole lip locking agresion for dominance, it is a 4 inch albino and a 5 inch red and 6 inch green severum, im not sure who did it i suspect my sverum but my red has a nice lil chunk out of him near his head you can see the white should i be worried what should i do they all seem fine together

If your waters in good condition it should heal ok without infection. just keep an eye on it. Most small wounds sre by the fish bumping into things. if they seem fine together most of the time I wouldnt worry to much, You will get a small amount of agresstion at times, thats just the nature of these fish, if it dose look worst or starts to look infected post a pic and sort more adice.

ok thankyou yes my nitrite is 0 and my nitates are under 25 ppm thankyou for the advice