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Descriptive notes:
À.dults attain about 100 em in body length.
Îî—Ê
%Ê—iîä
Body elongated
and spindle-shaped.
Û,Î< îÉËLÎL‘-ä.
Almost no scales, except
corsets.
the base of the
pectorai …. bordered by large scaleS:.e .
Very short conical snout scarcely compressed.
îVlouth somewhat small; eyes and nostrils relatively large.
Body. }ust under pectoral tin. dotted with severai black
spots.
Swim in the otting of ocean.
Eat mainly small fishes and young fishes located by means
of sight and auditory sense.
Extent of migration wide.
Swimming movement quick.
lt is said that the fish do not
make intensive schools as bonito make.
However. they
swim in loose schools.
Distribution extends in the waters of the south of Japan.
Bulbus olfactorius closely adhered to lobus olfactorius.
lnferior lobe and optio lobe well-developed.
Corpus cerebelli enormously large extending over optio lobes
and medulla oblongata.
Eminentia granularis and
acoustico-lateral lobe well-developed.
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104
105