THE HABITS ‘OF-FISHES
41
wonderful; for
number of the ,marine forms—Red
-
Mullet, for example—do the like. But a great many have
.
acquired a netaSté for_.;insects and insect larvæ, andthis'has
meant a new kind ,ofîfhnting for theshes. If the insects
lay their eggs in
like the quuit0es, the small
shes nd a rich harvest in the develOping-"larvæ; and “in
tropical countries have proved- of ineStimable value in
keeping down and even eXterminating those‘dreaded' eVils,
malaria and yellow fever—… But the taste _for ics has beC0me‘
so great, that one sh has developed into an
sharpe
shooter in stalking and sfnothering
a
drop of
water and mucus (Pl. IV). Others again’have taken partly
to a land life, even to-climb bushes, in search of their
favourite food.
.
:
.
‘
.
:
'
.
_.
_
,
,
4. BREEÇDING HABITS
.
_
°
:_
The;.mOSt interesting ad'iirïportant habits of sheS, as
_
of other animals, are those Which centre round the
tion of the. species.s_eAmong the active-forms it is
in the great majority of cases, that the production and setting
Sexual products are merely-passing incidents in the
1mpelhngthem1n many cases, it is true, to
_
otherwise of no'it<är‘est
to them; : The
products
”at certain
under
particular conditions
temperature, and depth of
_
water.
It is apparently their seleCtiôn or need:
conditions that makes them undertake the journeys‘adiïot
'any care for.the ospring. And we may note,
the'Same instinct affects both sexes and brings—thémato the} '
same
is often said,‘
;
_
,
“
the species—yet—it is- not
_
‘
ripenfearlieQr and arrivé on:—the groundsbeforethe
females
This is pr0bàblythé’rx‘ia‘i
She- epps Spawnpd
Ship …pb…p
b
unferti—lised.
._
AnuSSbèr pf
-. _ =:
01irthe:Sa‘xidorseaweed11ketheHernngandSand-eelpnd‘
-