Fig. 2. Welfare knowledge and number of individuals per FAO listing (2018).

Each FAO listing typically refers to the production tonnage of a particular species, in which case we searched the WOS for species-specific welfare publications and recorded whether there were no publications (no welfare), one to four publications (little welfare), or five or more publications (5+ welfare). We recorded FAO listings that referred to higher taxonomic grouping (such as genus or class) as species unknown. The dots represent the lower-bound estimate of number of individual animals involved for that listing and are jittered vertically to minimize overlap. Dots size corresponds to aquaculture production tonnage.