Links for reference https://www.msn.com/en-xl/news/other/researchers-in-japan-use-soybean-compound-to-make-catfish-100-25-female/ar-AAKq1zW https://herculeanstrength.com/japan-male-catfish-female-with-soy/#:~:text=Researchers%20in%20Japan%20have%20managed%20to%20turn%20male,males%2C%20providing%20the%20researchers%20with%20the%20extra%20incentive. https://www.newswars.com/japanese-researchers-use-soybean-compound-to-turn-male-fish-female/