﻿218 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  swim 
  with 
  the 
  body 
  upright, 
  as 
  youug 
  fish 
  of 
  other 
  families 
  do, 
  and 
  

   when 
  first 
  hatched 
  the 
  eyes 
  are 
  on 
  opposite 
  sides 
  of 
  the 
  head. 
  At 
  the 
  

   age 
  of 
  about 
  three 
  months, 
  however, 
  one 
  of 
  the 
  eyes 
  will 
  have 
  moved 
  

   to 
  the 
  other 
  side 
  of 
  the 
  head, 
  to 
  conform 
  with 
  the 
  change 
  of 
  the 
  

   body 
  in 
  swimming 
  from 
  an 
  upright 
  to 
  a 
  flat 
  position. 
  The 
  position 
  

   constantly 
  assumed 
  by 
  the 
  very 
  young 
  fry 
  is 
  ijeculiar, 
  the 
  long 
  axis 
  of 
  

   the 
  body 
  being 
  vertical, 
  with 
  the 
  head 
  upward. 
  This 
  is 
  owing 
  to 
  a 
  

   large 
  oil-globule 
  in 
  the 
  anterior 
  part 
  of 
  the 
  yolk-sac. 
  

  

  The 
  fry 
  are 
  qnite 
  hardy 
  and 
  stand 
  transportation 
  very 
  well. 
  They 
  

   have 
  been 
  kept 
  three 
  weeks 
  without 
  change 
  of 
  water 
  in 
  a 
  bottle 
  hang- 
  

   ing 
  in 
  a 
  box 
  of 
  running 
  water 
  to 
  maintain 
  an 
  even 
  temperature 
  in 
  the 
  

   bottle. 
  In 
  planting 
  the 
  fry, 
  which 
  is 
  done 
  in 
  one 
  or 
  two 
  days 
  after 
  

   hatching, 
  they 
  are 
  i)ut 
  into 
  the 
  transportation 
  cans 
  commonly 
  used 
  for 
  

   such 
  purposes 
  and 
  taken 
  in 
  a 
  boat 
  to 
  localities 
  in 
  which 
  the 
  brood 
  fish 
  

   are 
  found. 
  The 
  cans 
  are 
  put 
  overboard 
  and 
  sunk 
  until 
  the 
  mouth 
  is 
  

   submerged, 
  when 
  the 
  contents 
  are 
  gently 
  turned 
  out. 
  For 
  a 
  trip 
  of 
  not 
  

   more 
  than 
  two 
  or 
  three 
  hours' 
  duration, 
  with 
  water 
  temperature 
  about 
  

   380 
  F., 
  from 
  400,000 
  to 
  500,000 
  fry 
  may 
  be 
  safely 
  carried 
  in 
  a 
  10-gallon 
  

   can. 
  

  

  