﻿FISHES 
  OF 
  THE 
  YELLOWSTONE 
  NATIONAL 
  PARK. 
  

  

  17 
  

  

  uated 
  black 
  spots 
  on 
  his 
  burnished 
  sides. 
  He 
  is 
  a 
  brave, 
  dashing 
  fighter, 
  often 
  leap- 
  

   ing 
  salmon-like 
  many 
  times 
  from 
  the 
  water 
  before 
  he 
  can 
  be 
  broiight 
  to 
  creel. 
  We 
  

   found 
  him 
  feeding 
  on 
  the 
  open 
  riffs 
  or 
  rising 
  on 
  the 
  clear 
  surface 
  of 
  some 
  suidit 
  pool. 
  

  

  Ralph 
  E. 
  Clark 
  wrote 
  (1. 
  c.) 
  tlint 
  'Hlic 
  dark, 
  silvcrgray 
  trout 
  of 
  

   tlic 
  West 
  seem 
  to 
  favor 
  flies 
  more 
  in 
  harmony 
  with 
  their 
  own 
  

   coloring" 
  and 
  mentioned 
  the 
  gray 
  hackle, 
  brown 
  hackle, 
  coaclmian, 
  

   grizzly 
  king, 
  Scth 
  Green, 
  black 
  gnat, 
  and 
  white 
  moth. 
  

  

  It 
  is 
  an 
  excellent 
  food 
  fish 
  when 
  fresh 
  from 
  cool 
  waters. 
  

  

  4. 
  Rainbow 
  Trout 
  (Salmo 
  irideus) 
  . 
  

  

  The 
  rainbow 
  trout 
  has 
  its 
  geographical 
  range 
  in 
  the 
  mountain 
  

   streams 
  of 
  the 
  Coast 
  Range 
  and 
  the 
  west 
  slopes 
  of 
  the 
  vSierra 
  Nevada 
  

   Mountains, 
  but 
  the 
  natural 
  abode 
  of 
  the 
  rainbow 
  trout 
  of 
  fish- 
  

   cultural 
  fame 
  is 
  the 
  McCloud 
  River, 
  Cal. 
  In 
  fisli 
  books 
  this 
  form 
  

   is 
  recognized 
  as 
  a 
  subspecies 
  and 
  there 
  bears 
  the 
  name 
  of 
  Salmo 
  

   irideus 
  sliasta. 
  It 
  has 
  been 
  successfully 
  introduced 
  into 
  many 
  

  

  Fig. 
  4.— 
  Rainbow 
  trout. 
  

  

  streams 
  in 
  different 
  parts 
  of 
  tlie 
  United 
  States 
  where 
  it 
  was 
  not 
  

   previously 
  found. 
  The 
  following 
  plants 
  have 
  been 
  made 
  in 
  the 
  

   Yellowstone 
  Park 
  : 
  

  

  1889, 
  Gibbon 
  River 
  (Grebe 
  Lake 
  

  

  above 
  Virginia 
  Cascade) 
  990 
  

  

  1896, 
  De 
  Lacey 
  Lake, 
  near 
  Mam- 
  

   moth 
  not 
  Springs 
  

  

  1906, 
  Gibbon 
  River 
  10, 
  000 
  

  

  1908, 
  East 
  Fork 
  of 
  Gardiner 
  River 
  200 
  

  

  1908, 
  Gardiner 
  River 
  10, 
  000 
  

  

  1908, 
  Tributaries 
  of 
  Yellowstone 
  

  

  Lake 
  3, 
  700 
  

  

  1909, 
  Gibbon 
  River 
  7, 
  000 
  

  

  1909, 
  Grebe 
  Lake 
  8, 
  500 
  

  

  1909, 
  Little 
  Blacktail 
  Creek 
  3, 
  000 
  

  

  1910, 
  Rock 
  Lake 
  10, 
  000 
  

  

  1910, 
  Gibbon 
  River 
  15, 
  000 
  

  

  The 
  size 
  attained 
  by 
  the 
  rainbow 
  trout 
  varies 
  greatly 
  and 
  is 
  de- 
  

   pendent 
  upon 
  volume 
  of 
  water, 
  temperature, 
  food 
  supply, 
  etc. 
  

   Under 
  certain 
  conditions 
  it 
  reaches 
  an 
  extraordinary 
  size, 
  but 
  in 
  

   the 
  orcUnary 
  environment 
  6-pound 
  or 
  8-pound 
  fish 
  are 
  to 
  be 
  regarded 
  

   as 
  -large. 
  In 
  general 
  it 
  may 
  be 
  said 
  that 
  the 
  fish 
  does 
  not 
  overrun 
  

   2 
  pounds. 
  Its 
  food 
  is 
  composed 
  largely 
  of 
  insects. 
  

  

  