Is the netting actually wrapped around him? Also can you post some pics
+1
fins will grow back, the main concern is whether or not the net is still on the fin and whether its wrapped around something. If it is wrapped around the dorsal spines it should be removed if possible. I have a special net I use thats for cats and other fish that are prone to getting fins and barbs stuck. I used melafix on my hybrid when it got tangled up in a territory dispute with a red devil and he grew everything back, including a dorsal spine. If your water is kept clean, the fins should grow back without even needing meds but pics would help to better diagnose. I only use meds when I HAVE to.