Do we want fishy in the bladder? Major surgery.

Maybe surgery in any case. I retreat on the 'minor' lacerations and yes: how Long them barbs? In that is the key. Could be very effective barbs at only a mm or so - but if indeed they are er Lots of mm:

Back to drawing & quartering board.

Don't eat yellow snow. Don't pee in Amazon. Don't offer free med. advice.