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FishBase
Food and Feeding Habits Summary Oncorhynchus mykiss
 
Main Ref. Johnson, J. and E. Johnson, 1981
Fish stage recruits/juv. Mean length 5.20 TL
Sample size 142 Percent empty
Country USA Locality Orwell Brook, Oswego County, N.Y.
Period
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
Highlighted items on the list are known Feeding Periods of Oncorhynchus mykiss
Diet percent Food I Food II Food III Prey stage Item Name Comments
0.95 % zooplankton fish (early stages) fish eggs/larvae larvae fish larvae
0.13 % zoobenthos mollusks gastropods juv./adults Physidae Physidae
3.63 % zoobenthos insects insects larvae Plecoptera Plecoptera
8.94 % zoobenthos insects insects larvae Trichoptera 7.56% Trichoptera, 1.36% Coleoptera, 0.02% Sialidae
25.53 % zoobenthos insects insects larvae Ephemeroptera Ephemeroptera
33.05 % zoobenthos insects insects larvae Diptera Diptera
0.19 % zoobenthos worms n.a./other annelids juv./adults Oligochaeta Oligochaeta
0.80 % zoobenthos worms n.a./other annelids juv./adults annelids
0.82 % zooplankton other plank. Invertebrates n.a./other plank. invertebrates juv./adults Hydracarina 0.52% Hydracarina, 0.29% Collembola
25.96 % others others n.a./others n.a./others Coleoptera terrestial insects: Coleoptera, Dermaptera, Diptera, Hemiptera, Homoptera, Hymenoptera, Lepidoptera
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