332
—
THE BIOLOGY OF FISHES
has sh0wn that the light of a
lantern will induce them to ‘deviate from their
collect in a narrow passage beyond the rays. They shü’—thég“ Ëf
light .; other shes are
The only method of
shing for Sticklebaoks, a valuable sh in some ways, 18
by means of an articial light. Baron Cederstrôm
.
described the behaviour of these shes in the
manner
:
“
When the light approaches them, they
remain quite still at rst for a few moments,
uneonèerned; but suddenly a sh starts up,
casts — itself
to one side, and joins some comrade disturbed in the same
manner, or- takes its place in an army already formed —anÏd
-
advancing in the immediate neighbourhood, -an army
Which like a long, moving wall reves along the bottom,
at rst,_as a rule, in a— circle "round the light.
the adVanci-ng wall increases in height, length-, and
Circles
and thither, as if to collect more and
'
more stragglerS, in curves of greater or less extent—,: untll
at last, When the
to be
strong,
it su'ddenly d‘ashes _up
and assembles benea‘th the 11gh’f
the crush that now follOws is tremendous, andthe
_».‘moVements: of the sh culminatè: ina strange Confusion-,
;eXac‘tly as—thOugh they intendedWith theirimmesénumb$ŸFëËËË-Êij
:to oVerpower and vaquish the:re.ÿ InrsPite ofthehand—
'
nets now plied, they still}rush on, “undauntedfa‘S- before
When their numbers are ‘so£feW} that the shern—i’a‘
*
fr‘rot'think it-‘Worth wllstouse the
longer,he
,
, moyes _—_.;to; ': ahOther ,…1sp0t:
150“
'
:
off,0r
;ÉÏ
'
‘
-" “sameoccurrenœsarerepeated 5Ï(Smjitt): ——; :
=:::;
°
f Ûthershes areaectedmthesame _ wayInthe
f
.—
Med1terraneantheshermenmakeregularuseoflightS-fôÿflfÿÎ.É:;
—
thecaptureofcertanmgratoryshœ(Gast) :Theadults
'
,
1ÎËÏÎ
Ïf —
Anchovies, Ï
f
Sprats—evena Cute-sh(Lohgo),Rays
.ogî-ish.
ar‘dMækerelcomeafterthefoodCrustaceaWormanâ