My course on ecosystem services leads to some interesting urls , for instance, integrated farming of livestock and fish.
https://www.coursera.org/learn/ecosystem-services/home/welcome
https://www.fao.org/3/AC155E/AC155E04.htm
https://thefishsite.com/articles/shrimp-and-salmon-farmers-are-set-for-a-year-of-profits-and-plenty
https://www.worldwildlife.org/industries/farmed-shrimp
a comparison of India and Equador’s farmed shrimp resource use
https://onlinelibrary.wiley.com/doi/pdf/10.1002/aff2.23
https://www.globalseafood.org/advocate/ecuador-sets-legal-framework-for-offshore-fish-farm-development/ legal framwork in Ecuador set for offshore fish farming
https://wwf.panda.org/wwf_news/?184801/Sustainability-standards-completed-for-tilapia-farming
Garrison Gibson: books and blog 