44 THE AXGLEE-NATURALIST. 



several fish, the first of such names indicates in each case 

 the Genus to which the species belongs, — as Perca, the 

 Perch genus, Acerina, the Ruffe genus, Cyprinus, the 

 Carp genus, &c. 



CLASSIFICATION OF BRITISH FRESH- WATER FISH. 



1st Series. TRUE, OR BONY, FISH. 



Order I. SPINY-FINNED FISPI*. 

 Family 1. Perches — PEiiciDiE. 

 Species. 

 Perch. (Perca yiuviatilis.) 

 Ruffe, or Pope. (Acerina vulgaris.) 



Family 2. Fish with habd cheeks. 

 Species. 



Bullhead, or Miller's Thumb. (Cottus gobio.) 

 Rough-tailed Stickleback. (Gasterosteus trachurtis.') 

 Half-armed Stickleback. ( Gasterosteus semiarmatwf. ) 

 Smooth-tailed Stickleback. (GasterosteiK leiunts.') 

 Short-spined Stickleback. (Oasterosteus brachycentrim.) 

 Four-spined Stickleback. (Gasterosteus spintdosus.) 

 Ten-spined Stickleback. (Gasterosteus imngitivs.) 



Order U. SOFT-FINNED FISH with ventral fins on the belly t. 

 Family 1. Carps — Cypbinid^. 

 Species. 

 Common Carp. (Cyprinus carpio.) 

 Crucian, or German, Carp. (Cyprinus carassius.) 

 Prussian, or Gibel, Carp. ( Cyprinus gibelio.') 

 Gold Carp. (Cyprinus auratus.) 

 Barbel. (Barbus vulgaris.) 

 Gudgeon. (Gobio Jluviatilis.) 



* Acanthopterygii (see p. 36). 



t Malacopterygii abdominales (see p. 37). 



