M6 



Ii.i.iNois Natlrai. History Slrvev Bulletin 



Vol. 28. Art. 2 



Fig. 9. — I'pper picture: a shallow pool in the Sangamon River near Fisher. Habitats such 

 as this contain several species of suckers, basses, and sunfishes, and nnany species of small fishes. 

 Lower picture: a deep pool in the Salt Fork near Homer. Habitats such as this contain carp, 

 catfish, shad, and relatively few species of small fishes. 



