THE RELATIONS OF FISH TO MAN 



The young flatfish resembles an ordinary fish when it hatches, 

 but soon begins to broaden laterally and swim on its side, while 

 the eye on the lower side moves around to the upper side. The 



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Fig. 170. — A, rainbow trout ; B, mackerel ; C, cod. (From U. S. Fish Manual.) 



common halibut and the winter flounder are important American 

 food fishes. 



Many of our most important food fishes, the pollocks, cod- 

 fishes, haddocks, and hakes, belong to the codfish family. " From 



