Courtesy of U. S. Bureau of Fisheries 



A SAW-FISH 



This fish uses its grotesque jaw for lioth defensive and oflFensive 



purposes 



'^^x r'.VvyWyV, 



f cm 



Courtesy of U. S. Bureau of Fisheries 



MOSQUITO-EATING TOP MINNOWS 



Of the genus Gambusia; the upper is the male and the lower the 



female 



