452 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Table 5. — Caranx crysos: Correlation of the numbers of 

 lower-limb to upper-limb gill rakers of 73 specimens 



[The upper number in each block is the count obtained for that combination' 

 and the number in parentheses below is the approximate percentage of that 

 count in the total sample] 



LOWER-LIMB GILL RAKERS 



23 24 25 26 27 28 



< 

 X 



J 11 



J 



s 



IS 



§ 



3 13 



CS 

 w 

 5" 14 



the base of the anal fin, and on the midline posteri- 

 orly. A few melanophores are scattered over the 

 body, upper and lower jaws, and operculum. A 

 group of larger melanophores occurs over the eye 

 on the transparent portion of the head. A few 

 pigment spots are on the interspinous membranes 



of the dorsal and anal fins, and a row of melano- 

 phores occurs along the base of the anal soft-rays 

 (fig. 17). 



By about 12 mm. standard length the 3 rows 

 of elongated melanophores begin to intergrade 

 with the other body pigmentation (figs. 18 to 21). 

 The body bars begin to form between 15 mm. and 

 19 mm. —the rudiments of 5 bars are present in 

 the 15.6-mm. specimen (fig. 21). The number of 

 bars increases to the normal complement of 7 by 

 about 23 mm. (fig. 22). Rarely 6 or 8 bars may 

 be counted on one or both sides of fish above 23 

 mm. The bars are not distinct on some specimens 

 above 60 mm., but on six freshly preserved speci- 

 mens from Brunswick, Ga., bars were present on 

 specimens of 105 mm., 105 mm., Ill mm., and 

 134 mm., but not on specimens of 110 mm. and 

 124 mm. The caudal peduncle is unpigmented to 

 about 13 mm. (figs. 17 to 20). A dense mass of 

 pigment begins to develop on the upper portion of 

 the peduncle at about 28 mm. (figs. 22 and 23). 



20 



O 15 



< 



rr 



< 



< 



LlI 



"I — r 



0.5 



0.0 



1 — r 



"i — r 



_1 I I .L 



J I I L 



J L 



• crysos 

 o dentex 



J 1 I L 



I I I L 



1 



J 1 1 L 



50 



100 150 200 



STANDARD LENGTH IN MM. 



250 



300 



Figure 30. — Caranx crysos and C. dentex: Relation of the mean lateral-line ratio to standard length. 



