Salmonidae
Salvelinu5 f0mîmü5 fOW‘
12
Brook trout
KAWAMASU
.
_…………__
.….…___\
/
.
//
……………____\
…
0
'
N.olf.
bulb.0lf.
b…b'0h'
,
‘ b olf
lob.olf
.
;
_
_
_
|
o
,
_
SU .yp.
©
_
ch.opt.
_
'
ch.opt.
_
tact.
.
tect.
infund.
_
©
N 3
_
lob.inf.
=
_
lob.inf.
sac.vas.
_
_
emin.gran
' _
f=
““\0
—
crist cbl.
emin.gran.
N.8.
c.cbl.
.
-med.ob
‘
acu.lat.a.
ccbl
—
-
med_ob.
-
@
med.s
med.sp.
5mm
lateral
ventral
dorsal
W
Descriptive notes:
ÈEÊÎBÜŸCËT“ËîÊ/J\ÈTâ“äË®ËÜŸÎEËËË L‘CbZ).
Adults attain about 80cm in body length.
HËË=PÏŒlËÆ< %Ë L'CL\6.
_
This species is found primarily along the east coast of
'
-
North America and has been introduced into Japan.
Slender body compressed.
The dorsal aspect of the head is
.
not plain.
Teeth present only on the projection in anterior
__
part of vomer and not in the groove in posterior part.
Body color greenish-blue with small red spots scattered on
_
sides.
Wave-like spots on dorsal surface.
.
Eat insects and other small animals in the Water.
Carnivorous and cultured in cold water ponds.
'
Have a slightly aggregative nature.
Sight and auditory sense are sharp.
.
Bulbus olfactorius closely attached to lobus olfactorius.
Bulbus olfactorius large, but lobus olfactorius small.
Optic lobe very well-developed.
lobe
rather large.
Corpus cerebelli comparatively small.
'
"
'
.
_