"𝙏𝙝𝙚 𝙗𝙞𝙜 𝙥𝙧𝙤𝙗𝙡𝙚𝙢 𝙞𝙨 𝙖𝙡𝙡𝙖𝙮𝙞𝙣𝙜 𝙩𝙝𝙚 𝙛𝙚𝙖𝙧𝙨 𝙤𝙛 𝙥𝙚𝙤𝙥𝙡𝙚 𝙩𝙝𝙖𝙩 𝙮𝙤𝙪 𝙘𝙖𝙣 𝙝𝙖𝙫𝙚 𝙗𝙤𝙩𝙝. 𝙔𝙤𝙪 𝙘𝙖𝙣 𝙝𝙖𝙫𝙚 𝙗𝙤𝙩𝙝 𝙤𝙛 𝙩𝙝𝙤𝙨𝙚 𝙩𝙝𝙞𝙣𝙜𝙨 𝙬𝙤𝙧𝙠𝙞𝙣𝙜, 𝙥𝙖𝙧𝙩𝙞𝙘𝙪𝙡𝙖𝙧𝙡𝙮 𝙗𝙚𝙘𝙖𝙪𝙨𝙚 𝙩𝙝𝙞𝙨 𝙛𝙞𝙨𝙝 𝙞𝙨 𝙨𝙪𝙘𝙝 𝙖 𝙝𝙞𝙜𝙝-𝙫𝙖𝙡𝙪𝙚 𝙥𝙧𝙤𝙙𝙪𝙘𝙩.” 

I'm a proponent of fish farming, but this kind of statement unnerves me a bit because the logic sounds self-serving. No, there really isn't a strong logical connection between "This fish is such a high-value product" and "[Therefore] you can have both of those things working" (catching wild fish and also fish farming).  Whether you can, in fact, "have both of those things working" is a matter for marine science to determine -- not a question of economics and wishful thinking.  

I'd love to see butterfish farming become economically viable.  But that shouldn't be predicated on the money to be made by doing it.