164 Fresh Water Aquarium 



sus) is an exceedingly graceful and lively lit- 

 tle fish of a slender and well proportioned 

 shape. Considering that this fish occurs 

 mostly in clear, cold, rapid flowing mountain 

 streams, it is rather surprising how well 

 it stands the sudden change to the aquarium, 

 with its radically different conditions. It 



Fig. 80. Black-nosed Dace. Rhinichtys atronasus. 



can he transferred to the aquarium with 

 less risk than some of the more brightly col- 

 ored and larger fish of the mountain 

 streams. AYhile some of the fish may pos- 

 sibly perish during the first few days, the 

 majority will survive and once acclimated, 

 will probably live and thrive for years. If 

 threatened, the fish will dart with lightning 

 rapidity under stones, roots or into other 



