ATLANTIC SAILFISH 



155 



60 

 40 



20 



n 1 — I — I I M 1 1 



1 1 1 — I Mill 



-| 1 1 I I II I 



:H'- 



J I I I I I I 



I [ I I I r I r 



I I I I 1 I 



10 20 40 60 100 



STANDARD LENGTH IN MM. 



Figure 28. — Relation of head depth to standard length. Large black dots represent the unidentified species. 



DEVELOPMENT OF FIN RAYS 



Tables 4, 5, and 6 show the numbers of rays in 

 the dorsal, anal, and pectoral fins of specimens of 

 different sizes. Counts listed include both the 

 Atlantic sailfish and the unidentified species. The 

 following discussion of the numbers of rays in the 

 fins applies only to the Atlantic sailfish for speci- 

 mens exceeding 10 mm. Specimens below 10 mm. 

 include both the Atlantic sailfish and the un- 

 identified species. 



The number of rays in the dorsal fin of speci- 

 mens which exceeded 10 mm. in length ranged 

 from 47 to 57 (table 4). In those exceeding 26 

 mm. in length tiie full complement of rays is 

 present, and the number ranged from 49 to 57, 

 witii 75 percent having 49 to 53. The smallest 

 specimen with a complement of 49 rays or more is 

 1 1 ..3 mm. in length, and tiie largest with fewer than 

 this number is 16.2 mm. 



1 Unidentified specimens. 



' Specimen from Beebe (1941). 



