6 4 



AMPHIBIANS AND FISHES. 



The common carp and Prussian carp (Cyprinus 

 carpio and Cyprinus gibelio) are both fishes which 

 may be easily kept in our larger fresh-water aquaria. 



Fig. 23. 



Common Carp (Cyprinus carfid), 



The former grows to a great size, but might easily be 

 removed when it is too big for its tank. Both these 

 fishes live to a great age, and are very tenacious of 

 life, the latter especially so. When of the length of 

 three or four inches the common carp is a very useful 

 and even an attractive fish. It is a good scavenger, and 



