COMP.VR-VTIVE STUDY OF SCOMBROID FISHES. 



393 



Table showing the temi)eratuiv of ^^at<'l• in wliii-li 

 st^jjubroid fishes are foimtl. 



T!xl)le showing the vertical distribution of scombroid fishes. 



2 Ira 10 111 on 111 81 111 100 m 120 m 



The salinity (A the water, luost snitalih; for our scombroid fishes, difl'ere very 

 greatly for different species. Generally speakbig fishes of the Scombridae and 

 Cybiidae are adapted to water of lower density, 1.022 — 1.025, while plecostean 

 fishes prefer water of higher density, 1.025 — 1.027. Cyhium koreanum can 

 withstiind water of very low density. Of the Katsuwouidae, species of Auxis 

 are sometin:es found in littoral watei-s of low density. 



