This is covered in Chapter 23 of the iAVs Handbook.
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The best fish species for iAVs are those that are hardy, fast-growing, and have a high feed conversion rate. These attributes lead to more waste, which is turned into nutrients for the plants. The iAVs research was based on Tilapia, but generally any species that can tolerate a range of water conditions and has a high growth rate is suitable. In Australia, Jade Perch as commonly used species due to their hardiness and fast growth and because Tilapia are illegal in Australia.
Rita T. Pryce Changed status to publish 1 January 2025