Dual isotope plot of δ¹³C and δ¹⁵N. (A) Psenopsis anomala and its host jellyfish, (B) Thamnaconus modestus and its host jellyfish, (C) Trachurus japonicus and its host jellyfish. Dotted lines indicate pairs of an associated fish and its host jellyfish which were collected together. Abbreviations: BD, bell diameter of host jellyfish (cm); SL, standard length of associated fish (cm).