128 True Fishes 



AMBER JACK, BANDED RUDDER FISH, 



PILOT FISH, THREE-SPINED STICKLEBACK, 



NINE-SPINED STICKLEBACK 



I. Two dorsal fins 

 Page 129, figs. A, B 



la. Origin of anal fin well in front of center of base 

 of second dorsal fin 

 Page 129, fig. A 



See Amber Jack, p. 362. 



lb. Origin of anal fin at or behind center of base of 

 second dorsal fin 

 Page 129, fig. B 



See Banded Rudder Fish, p. 361. 



II. A single dorsal fin preceded by a series of free spines 

 Page 129, figs. C-E 



Ila. Base of dorsal fin much longer than head 

 Page 129, fig. C 



See Pilot Fish, p. 362. 



lib. Base of dorsal fin about equal to head 

 Page 129, figs. D, E 



1. Usually three spines before dorsal fin; some- 

 times four or five 



Page 129, fig. D 



See Three-spined Stickleback, p. 337. 



2. Usually nine spines before dorsal fin; may vary 

 from seven to twelve 



Page 129, fig. E 



See Nine-spined Stickleback, p. 338. 



