FISHERY BULLETIN: VOL. 71, NO. 2 



Table 6. — Average calculated length and average length at capture of pygmy 

 whitefish, from Flathead Lake, 1967-71. 



[F, females; M, males; U, unknown sex.] 



Table 7. — Percentage frequency of occurrence of food items in stomachs containing food and 

 (in parentheses) percentage estimate of volume for pygmy whitefish from Flathead Lake.' 



[The two percentage figures are the same or approximate because most stomachs contained only 



one kind of food.] 



' Items appearing in only one or two stomachs included: diatoms, copepods, Podocopo (Ostracoda), Mayfly 

 nymphs (Ephemerotera), midge adults (Tendipedidoe), leaf hopper (Cicodeliidae), ants (Hymenoptera), terrestrial 

 beattle (Coleoptero), and water mites (Hydrocarina) . All of these items composed only a small port of stomach 

 contents. 



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