Luthy et al : Identification of larval sailfish, white marlin, and blue marlm in the western North Atlantic Ocean 



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Figure 2 



Morphometric measurements illustrated on a 10.7-mm SL sailfish. SN = 

 snout length; SN-E = snout to mid-eye; OD = eye orbit diameter; ED = eye 

 diameter; PTS = length of pterotic spine; PRO = length of preopercular 

 spine. Drawings by S. Luthy. 



Gular membrane 



Branchiostegal 

 membrane 



Figure 3 



Lower jaw pigments were characterized by drawing chromatophores onto 

 a generalized lower jaw diagram (A), reproduced from Richards (1974). A 

 grid (B) was then superimposed onto the diagram and the number and 

 shape of chromatophores were recorded for each grid cell. The numbers in 

 diagram B are numbers used to identify the cells of the grid and not the 

 number of chromatophores per cell. 



