22
THE BIOLOGY OF FIËHES
Aphya
to live -for only
year, and a small
in the Mediterranean is said by Tâning to
live
Some of the small at—shes (Arnoglossus and
BothuS) do
to live more than four years.
On; the
other
a study of the boues of Arctic Plaiœ_
*
came to the conclusion that they
at
least sixty ,
years and possibly longer. The Plaice, of the North Sea
‘
seldom get the chance nowadays of living to thirty years.
_
Under natural conditions thereseems no reason why some
shes, like the Sharks for exampleg—Should ot live a hundred
years or more, but we do not knoW what puts a limit to the
age.
Cod frequently develop a crooked mOuth,‘and that
may put a stop to their feeding, but there may also be some
_Ï
kind of
-…Thej
1n
of
constant pèrsècuti0n
all sorts of animals;i_hasÏi'ecently
been
to reach_ the
age?
yearS- a =
J
…
consrderableamountofheat Ând as a matter of fact, the
temperatureofthebloodln shes investigated has always
’Of
l
some
cases
much greater
i=b_ee'n_
;! —;
musclesoftheTunnyœmperamresof 1
.
Theshesasaruldonethavetowerkhe£rd f…« a
’
1vugndthny unttmtntfth ……pa…
‘
: — VelY:—' low temperature;
we
.
have but
_<3f'»t—11—ig£
_subjegäiç.î The
'
absent,—€the ; thiçk, leaf—hay
'
the
‘
: _;or
müs‘C1es
a‘rC ' SQprotected,andthls makes
essential
dff …… 1wm1Thsh
…
,
”thé envir0nmëfcäl.inuences,_itæStandS,apartor
'