The Inhabitants of the Aquarium 171 



who, tempted by the attractive appearance 

 of the fish, buy it, only to see it perish after 

 a short time. 



The Holbrook Gambuse (Gamblisia afUnis). 

 This very handsome little fish should be bet- 



Fig. 81. Holbrook's Gambuse, Gambusia afhnis. 



ter known. It is one of the oddest of our 

 aquarium fishes, not only on account of its 

 coloring, and the difference between the 

 sexes, but also because, instead of spawn- 

 ing like most other fishes, the young are 

 born in their perfect form. The male is 



