PhD student (in bioethics) in the National University of Singapore
Yes feeder fish for mandarin fish is a big category. But my understanding is that many species' fry are used, including pond loaches (rarely though, I believe). I am not sure the majority of them are one species (i.e. mud carp).
Also, since we need to count fry to come up with a few trillion figure for feeder fish for mandarin fish, we also need to count pond loach numbers by the fry stage. Estimates of pond loach survival rates from fry to sellable fish vary widely, from 2% to 10%. Given that the number of pond loach slaughtered each year is roughly 10B, that's ~100B-500B pond loaches slaughtered each year.
Yeah, maybe mud carp or some other species is no.1, but I am guessing it is also possible pond loach is still no.1 or close.
Thanks for asking, here are some ideas I personally wish funders would consider at least investigating. The epistemic status of some of these ideas is not great, and I never attempted any robust analysis on the expected values of these potential interventions/causes, but I hope they are worth investigating.
Thank you for the great post! I don't have comments right now on your subject matter, but want to provide a bit of information about my region.
and then trying to steer the conversation as quickly as possible back towards safer, intuitive examples, like malaria nets, lead poisoning, factory farms, biosecurity, etc.
In China, my sense is that factory farming is not a "safe" option when it comes to explaining EA, cause prioritization, etc to non-EAs or even new EAs. On the other hand, for some reason, AI seems to be much more "safe" than factory farming.
Spare billions of chickens from cages by preventing the expansion of broiler chicken cages in East and Southeast Asia. [Short-term]
Thank you for the post! I am glad that this is on the radar! (broiler cages in particular, but also in general, thwarting the growth of certain industries or practices)
Do you know if the Centre for Biomedical Ethics was consulted?
I am trying to ask. I will PM you when I get an answer.
It would also be very interesting to know how the university and IRB approval worked here.
I will try to investigate too.
Please feel free to email me to keep in touch. Or add me on linkedin.
Yes, thanks for the reminder. I have long (incorrectly) thought pond loach is just one species, until Ryan pointed out that there are at least 4 (but seems like only two are commercially popular).
From what I learned, even though mud carp should be the biggest used fry for mandarin fish feed, many other species such as other carps and tilapia are also used in significant amounts. But in terms of cause priortization/conceptualization, grouping them together makes perfect sense!