﻿FISHES 
  OP 
  THE 
  YELLOWSTONE 
  NATIONAL 
  PARK. 
  9 
  

  

  other 
  fish 
  than 
  trout 
  as 
  food 
  for 
  tlio 
  pohcans, 
  would 
  reduce 
  the 
  

   output 
  of 
  tapeworm 
  eggs 
  from 
  that 
  source. 
  The 
  fish 
  l;)est 
  suited 
  

   to 
  that 
  end 
  is 
  the 
  cimb 
  (Leuciscus 
  lineatus) 
  and 
  perhaps 
  tlie 
  silv(U'si(h) 
  

   minnow 
  {Leuciscus 
  hydro 
  phlox), 
  botli 
  of 
  wliich 
  abound 
  in 
  Heart 
  

   Lake 
  and 
  Witch 
  Creek. 
  

  

  Tapeworms 
  would 
  probably 
  disappear 
  from 
  trout 
  transferred 
  to 
  

   other 
  waters 
  where 
  there 
  are 
  no 
  pelicans, 
  uidess 
  by 
  cliance 
  some 
  

   other 
  fish-eating 
  bird 
  may 
  be 
  or 
  might 
  become 
  a 
  host 
  for 
  the 
  adult. 
  

  

  LIST 
  OF 
  THE 
  FISHES. 
  

  

  As 
  has 
  been 
  indicated, 
  10 
  species 
  of 
  fishes 
  are 
  kn(^wn 
  to 
  be 
  native 
  

   to 
  the 
  waters 
  of 
  the 
  park, 
  of 
  which 
  only 
  3 
  are 
  reputed 
  to 
  be 
  game 
  

   fishes. 
  Howc^ver, 
  6 
  others, 
  all 
  game 
  fishes, 
  have 
  been 
  introduc<Ml 
  and 
  

   aU 
  but 
  two 
  of 
  th(^m 
  have 
  become 
  acclimatized 
  and 
  afford 
  good 
  fishing. 
  

  

  A 
  brief 
  discussion 
  of 
  each 
  kind 
  of 
  native 
  and 
  introduced 
  fish 
  fol- 
  

   lows, 
  preceded 
  by 
  a 
  key 
  intended 
  as 
  an 
  aid 
  to 
  the 
  angler 
  in 
  the 
  identi- 
  

   fication 
  of 
  his 
  catch. 
  

  

  The 
  key 
  is 
  arranged 
  on 
  the; 
  alternative 
  plan 
  and 
  is 
  to 
  be 
  used 
  in 
  tlie 
  

   following 
  manner: 
  Trace 
  the 
  characters 
  of 
  the 
  specimens 
  with 
  what 
  

   is 
  said 
  under 
  each 
  succeeding 
  letter, 
  until 
  there 
  is 
  a 
  disagreement, 
  or 
  

   the 
  name 
  of 
  the 
  fish 
  is 
  reached. 
  When 
  a 
  disparity 
  occurs, 
  go 
  to 
  the 
  

   double 
  of 
  the 
  lett<T 
  under 
  which 
  it 
  occurs, 
  thence 
  proceed 
  as 
  before 
  

   until 
  another 
  disagreement 
  or 
  a 
  name 
  is 
  found, 
  and 
  so 
  on. 
  For 
  

   exampl(>, 
  take 
  the 
  brown 
  trout, 
  assuming 
  that 
  it 
  is 
  not 
  recognized; 
  

   compare 
  it 
  with 
  statement 
  A, 
  with 
  which 
  it 
  agrees; 
  proceed 
  to 
  B, 
  

   with 
  which 
  it 
  does 
  not 
  agree, 
  having 
  fewer 
  rays 
  In 
  the 
  dorsal 
  fin. 
  

   Turn 
  to 
  BB, 
  with 
  which 
  it 
  agrees, 
  and 
  by 
  the 
  name 
  in 
  pan^nthesis 
  it 
  

   is 
  found 
  to 
  belong 
  to 
  the 
  Salmomdse 
  or 
  salmon 
  family. 
  Then 
  go 
  to 
  1), 
  

   with 
  which 
  it 
  is 
  found 
  to 
  disagree 
  in 
  having 
  a 
  large 
  mouth 
  and 
  coarse 
  

   teeth 
  and 
  more 
  scales 
  than 
  stated. 
  Turn, 
  th(^refore, 
  to 
  hh, 
  where 
  an 
  

   agreem(^nt 
  and 
  the 
  subfamily 
  to 
  which 
  it 
  belongs 
  are 
  found. 
  Pro- 
  

   ceed 
  r(*gularly 
  then 
  to 
  d, 
  which 
  is 
  also 
  found 
  to 
  agree. 
  Continue 
  to 
  

   e, 
  with 
  which 
  it 
  does 
  not 
  agree, 
  as 
  it 
  is 
  not 
  profusely 
  blackspott<Hl 
  

   and 
  has 
  not 
  130 
  scales 
  in 
  lengthwise 
  series. 
  Turn 
  to 
  ee, 
  with 
  wiiich 
  

   it 
  agrees. 
  Proceed 
  to 
  g, 
  with 
  which 
  it 
  does 
  not 
  agree. 
  Then 
  turn 
  

   to 
  gr^, 
  with 
  which 
  it 
  agrees 
  in 
  the 
  number 
  of 
  scales 
  and 
  color 
  descrip- 
  

   tion, 
  ** 
  and 
  the 
  numbered 
  name 
  of 
  the 
  brown 
  trout 
  is 
  reached. 
  The 
  

   number 
  indicates 
  its 
  place 
  in 
  the 
  annotated 
  list 
  of 
  fishes 
  which 
  follows 
  

   the 
  k(y. 
  

  

  If 
  it 
  is 
  desired 
  to 
  ascertain 
  the 
  name 
  of 
  a 
  specimen 
  of 
  fish 
  without 
  

   an 
  adipose 
  fin, 
  which, 
  of 
  course, 
  is 
  found 
  not 
  to 
  conform 
  to 
  the 
  state- 
  

   ment 
  A, 
  turn 
  to 
  AA 
  and 
  proceed 
  as 
  in 
  the 
  foregoing 
  example. 
  

  

  a 
  The 
  color 
  description 
  of 
  each 
  species 
  as 
  given 
  can 
  not 
  always 
  be 
  relied 
  upon 
  t-o 
  exactly 
  fit 
  a 
  specimen 
  

   in 
  hand, 
  owing 
  to 
  the 
  great 
  variability 
  in 
  this 
  respect. 
  However, 
  there 
  will 
  always 
  bo 
  more 
  or 
  less 
  approach 
  

   to 
  the 
  general 
  color 
  scheme 
  as 
  stated, 
  which 
  no 
  other 
  species 
  will 
  show. 
  

  

  