Fishes of the Western North Atlantic 



381 



Opisthonema oglinum (LeSueur) 1 8 1 7 



Atlantic Thread Herring, Hairyback, Shad Herring, Bristle Herring, 

 Sargo, Sargo de Gato, Sardinha Large, Sardinha Sargo 



Figure 94 



Study Material. A total of 65 or more specimens, 65-250 mm TL, 50-182 mm 

 SL, from Massachusetts, Rhode Island, New Jersey, Virginia, North Carolina, Georgia, 

 Florida (both coasts), and Texas; Atlantic coast of Panama; Colombia; at Recife, 



Figure 94. Opisthonema oglinum, 220 mm TL, 167 mm SL, Beaufort, North Carolina, USNM 51873. 

 Drawn by Ann S. Green. 



Barro Santos, and Sao Francisco, Brazil; Cuba; Puerto Rico; Jamaica; Haiti; Barbados; 

 and Trinidad. Also several lots of juveniles from Beaufort, North Carolina; Key West, 

 Florida; Mustang Island, Texas; Colon and Portobello, Panama. 



Distinctive Characters. See Relationship. 



Description. Proportional dimensions in per cent of standard length, based on 

 study specimens, 150—182 mm SL. 



Body: depth 30-40. 



Caudal peduncle: depth 8.5— 11. 



Head: length 22-28. 



Snout: length 5.3—7.3. 



Eye: diameter 6.0—8.5. 



Interorbital: width 5.0-6.7. 



Maxillary: length 8.8-12. 



Anal fin: length of base 16.7-2 1.5. 



Pelvic fin: length 8.5-1 1.5. 

 Pectoral fin : length 1 7—2 1 . 



Scales: 43—50. 



Ventral scutes: 32—36. 



Fin rays: dorsal 17—21, most frequently 

 19 or 20; anal 21-25, ^riost fre- 

 quently 22—24; pectoral 15—17. 



Vertebrae: 45-48 (15 specimens). 



