5 b 
Rhinonemus GILL, Proc. Acad. Nat. Sci. Philadelphia, p. 241, 
1863. (Type Gadus cimbrius LINNAEUS, designated by JORDAN, 
Genera of Fishes, pt. 3, p. 325, 1919 .) 
Body elongate, rounded in front, compressed behind. Caudal 
peduncle distinct. Head flattened above. Snout short, rounded. Mouth 
moderate, lower jaw shorter than upper. Maxillary reaches to eye or 
slightly beyond. Teeth in band in each jaw and on vomer. Barbels 3 or more 
on snout, lips and below mandibular symphysis. Gill rakers nearly obsolete. 
No pseudobranchiae. Branchiostegals 6 or 7. Vertebrae 48 or 49, of which 
32 or 33 caudal. Pyloric coeca 8. Scales minute. Two dorsals, first of 
very slender small rays, as fringe in depression, first ray prolonged? 
second fin elongate and also reaches caudal base. Anal single. Caudal 
distinct. Ventral rays 3 to 8. 
Species few, small fishes from shallow waters and littoral in cool 
seas. The first dorsal especially distinctive, broken into a number of fine 
% 
filamentous rays, united by fin membrane only basally, the last hidden in 
deep groove in dorsal margin. As the European species are frequently found 
in rock; pools they have been called "rocklings." 
