Broadly scientific consensus is that at least bony fish likely experience pain in all of the same quantifiable ways that humans do. They exhibit avoidance learning, they have a central nervous system, nociceptors, opiod receptors, exhibit reduced avoidance responses to noxious stimuli when given analgesics… Etc.
The few scientists that have argued over the years that fish likely do not or cannot experience pain have been in the minority in the last 50 years, and each passing year finds decreased evidence for their claims. Dismissing it all as ‘complete speculation’ is… Very inaccurate.
Also - there already is “something dirt cheap to kill them faster” - hardwood fish bat. Lasts forever and instantly stuns, and with a couple of strong well-aimed blows will definitely kill.
Broadly scientific consensus is that at least bony fish likely experience pain in all of the same quantifiable ways that humans do. They exhibit avoidance learning, they have a central nervous system, nociceptors, opiod receptors, exhibit reduced avoidance responses to noxious stimuli when given analgesics… Etc.
The few scientists that have argued over the years that fish likely do not or cannot experience pain have been in the minority in the last 50 years, and each passing year finds decreased evidence for their claims. Dismissing it all as ‘complete speculation’ is… Very inaccurate.
Worth reading:
https://en.wikipedia.org/wiki/Pain_in_fish
Also - there already is “something dirt cheap to kill them faster” - hardwood fish bat. Lasts forever and instantly stuns, and with a couple of strong well-aimed blows will definitely kill.