146 Fresh Water Aquarium 



tack any enemy that may attempt to disturb 

 their brood. It has been observed that a 

 male taken from the nest with a net, and re- 

 placed in the water about 100 feet away, 

 returned to its post at the nest, before the 



Fig. 68. Elongated Sunfish, Pomotis clongatis. 



observer was able to reach it. To ascertain 

 to what extent this remarkable sense was 

 developed, the same fish was caught again, 

 carried half a mile away by one person, a 

 second person watching the nest for the re- 

 turn of the fish. In about two minutes the 



