April, 1910. Fishes of Chicago — Meek and Hildebrand. 283 



Fig. 48. German Carp; Leather Carp. 

 Cyprinus carpio L. (Aft«r (loodc.) 



An introduced species which has become estabUshed in many 

 streams of the northern half of the United States. 



Fox River, McHenry, Illinois; Lagoon, Jackson Park, Chicago, 

 Illinois; Thorn Creek, Thornton, Illinois; Lake Michigan, Millers, 

 Indiana; Lake Michigan, Pine; Indiana. 



Genus C'araHMiiiw Nilsson. 



Gold Fishes. 



Body oblong, more or less compressed, varv-ing greatly; phar- 

 yngeal teeth 4-4; the dorsal region elevated; dorsal fin long, its first 

 rays spine-like; the second or third long and serrated behind; anal 

 short with similar spine; lateral line complete. 



a. Soft anal rays 5 to 6; scales in lateral series 28 to 32. 



carassius, 283 

 aa. Soft anal rays 7 to 8; scales in lateral series 25 to 27. 



auratus, 284 



Carassius carassius (Linnaeus). Crucian Carp; Gold Fish. 



Head 3; depth 2^; D. iii, 18; A. iii, 5; scales 28 to 32. 



Body robust, covered with large scales; dorsal and anal fins with 

 strong spines, serrated behind; lateral line complete. 



Color dark brown, becoming golden-yellow to silvery under do- 

 mestication. 



Length about 12 inches. 



