Indo-Pacific sailfish (Istiophorus platypterus)

Aren't these impossible to keep in captivity?

@Mr Gharial
Aquamarine Fukushima has been recently doing extensive research on how to keep sailfish in captivity, specifically on how to prevent them from breaking their bills and getting infections, forcing euthanasia.

The question is though how many are dying as they try to sort it out.

The sailfish died three days ago on 19 December after being exhibited for 84 days. This is the current world record.