Judging from your photos, this is not an eel. It looks like a snake. Eels have no scales! Although Monopterus albus is an omnivorous fish, it has no special attack ability and no powerful defense weapon. Its only skill is "36 tricks, escape is the best policy." It has neither pectoral fin nor ventral fin, and even dorsal fin and gluteal fin are degraded to only a little skin fold, and scales are invisible to the naked eye. This is an eel:

I suggest you go to the hospital for a physical examination without delay!