I have edited as to why this comes to mind.
https://www.google.com/search?q=Fish+sex+wastewater&sca_esv=569475139&sxsrf=AM9HkKnf_9LG8HwuJmzhznIZBcVwC_JETA%3A1696014043795&ei=2x4XZcb8L_aJi-gP5bKDoAM&oq=Fish+sex+wastewater&gs_lp=EhNtb2JpbGUtZ3dzLXdpei1zZXJwIhNGaXNoIHNleCB3YXN0ZXdhdGVyMgUQIRigAUjAD1AAWABwAHgAkAEAmAGnAaABpwGqAQMwLjG4AQPIAQDiAwQYACBBiAYB&sclient=mobile-gws-wiz-serp
I have edited as to why this comes to mind.
https://www.google.com/search?q=Fish+sex+wastewater&sca_esv=569475139&sxsrf=AM9HkKnf_9LG8HwuJmzhznIZBcVwC_JETA%3A1696014043795&ei=2x4XZcb8L_aJi-gP5bKDoAM&oq=Fish+sex+wastewater&gs_lp=EhNtb2JpbGUtZ3dzLXdpei1zZXJwIhNGaXNoIHNleCB3YXN0ZXdhdGVyMgUQIRigAUjAD1AAWABwAHgAkAEAmAGnAaABpwGqAQMwLjG4AQPIAQDiAwQYACBBiAYB&sclient=mobile-gws-wiz-serp