OPAH. 135 



jaw. Body more slender near the tail. Lateral line much 

 arched at first, afterwards lower and irregular. The dorsal fin 

 single, beginning above the middle of the root of the pectorals, 

 the first rays long and decreasing, the fin proceeding moderately 

 low, and spreading again at its termination: the anal does the 

 same, but less conspicuously. Pectorals very long and pointed. 

 Ventrals also very long, and far back on the body — abdominal. 

 Tail broad and forked. The general colours are splendid red 

 and green, with tints of purple and gold, dotted over with 

 round silver-white spots; but in one instance, described by 

 Nilsson, the spots of yellow and white were only below the 

 Literal line. Iris of the eye scarlet, and the fins a lively red. 



