10-2 



THE FRESII-WATEU FISHES OF EUROPE. 



It fiittens witli age, aud the body then becomes nearly cylindrical. It is 

 brouo-ht to the Vienna market under the name of Lake Carp, but its Hesh is 

 less prized than that of the Danube Carp. 



The Cijprinus reghia was described by B<)na])artc from Ital\', and after- 

 wards identified by Heckel as occurrint^ in the Trcviso ; but Canestrini 

 follows Ciiintlier in regarding^ this, like the other types we have named, as 

 only a variety of 6'. carpio. The body is less elongated (Fig. 37) than in C. 

 /iiiiigariciiH, and is more compressed, so that while the back is angular in C. 



Fig. ;]7. -i\i'iaNis 111 (.ISA (hox.vpakte). 



rcijhiit, in C liioigaricuH it is broad. The scales are larger than in that variety 

 — the largest above the lateral line exceed in size the diameter of the eye. 



A broad variety of C^pi'lnus carpio, found in the muddy rivers and ponds 

 of Southern Russia, is known as the C. itonhnanni (C. and V.) . It reaches a 

 weight of two and a half pounds. 



Hyhrii) between the Common Carp and the Crucian Carp. 



D. 4/18—20, A. 3/5—0, V. 2/8, P. 1/17, C. li). 



Wherever the Ci/prlnus carpio and Carassius vulgaris are kept in a 

 domesticated state this hybrid is met with; but its hybrid nature was not at 

 lirst recognised, and is stated to have been first proved by Dybowski. 

 Indeed, the celebrated ichthyologists Heckel and Kner regarded it as the 

 type of a distinct genus, and described the form as a species, under the 

 nauK; Carpio kollarii; and on this account it may be interesting, from its 

 bearing upon evolution of species, to give some detailed description of its 

 characteristics (Fig. 3S). 



