Acknowledgement
This manuscript has markedly benefited from the comments of anonymous reviewers. The method used to produce hybrids between the river puffer, Takifugu obscurus, and the tiger puffer, T. rubripes, is the subject of a Republic of Korean patent (Title: Production method of hybrid between river puffer, T. obscurus, and tiger puffer, T. rubripes; Patent No. 10-1632842; June 2016). We are grateful to the staff of the Fishery Genetics and Breeding Sciences Laboratory of the Korea Maritime & Ocean University, Republic of Korea.
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