I would of just removed the head and kept it for bait. couldnt bare to see the poor fishy looking up at me with that bad tooth. jesus its the sort of nightmare that keeps me up all night. welcome to the site.
I think this is all very irresponsible, you need to be properly qualified to practise dentistry, not just anyone can do it.:nono: It could be life threatening to the fish and as for fillings; what type? did anyone even consider the fish and think of asking "would you like a crown"? for example and what about hygene?, really guys come on, a wee bit of common sense please.