l
H emiramphidae Hezniramphu5 sajorz Clem
“e::
3 1
"
Japanese halfbeak
SAYORl
—_
-
N_olf.
N.olf.———_Ï/
'
bulb.olf.
b“'b'°'f'
—\ü
?
lob.olf.
-
frs.end.
.
—
ch_opt
ch.opt.
@
î‘îï’
lob.inf.
sac'Vas‘
N.3.
emin_gran_
c.cbl.
@. _
c.cbl.
ven…"
0
‘ —
med.ob.
med.ob.
‘
N.9.—:—10.
med'sp'
“————w
lateral
ventral
dorsal
,
____-———————————_—_——_—
Descriptive notes :
“âîŸlä”âÊi£ïïîËtîä> UMi‘ËV.
Adults attain about 40cm in body length3Ëä‘æchi (?ËË) lzttêsbfïë<
'
Elongated body slightly compressed with cycloid scaleS('J‘ËÊU lää=l®%iËëî Lower jaw extremely longer than
Eyes comparatively large.
,
Color of dorsal surface bluish-green, ventral surface
-
silver-white.
"
—
Live in schools near the surface of the coastal waters.
'
Eat
marine animals such as zooplankton located by
means
of eyesight and auditory sense.
_
Have positive phototaxis.
‘
By stimulation of sound or shadow, sometimes jump up
from the water.
…
Always
swim horizontally near the surface of waters and
:
never submerge below middle waters.
'
'
Extent of migration relatively narrow.
'
,
,
Distribution extends from the coastal waters of Hokkaido, to
-
'
the seas
of East China and Formbsa.
'
Caught by purse seihes and pole and lines.
'
Bulbus olfactorius extremely Small; lobus olfactorius
compressed and small.
Lobus opticus enormously large;
_
'—
'
_'
corpus cerebelli compressed and elongated posteriorly.
Erriinehtia granularis slightly expanded lateraliy and crista
»
'
cerebelli relatively well-developed.
,
'
'
,.
.
_
_
88—89.
_
°
'
’
_
Ï
Ÿ
_
'
_
‘
'