SRAC
Species Profile
Largemouth Bass
http://aquanic.org/publicat/usda_rac/efs/srac/722fs.pdfBroodfish are usually more than 2
years old and weigh at least 1.5
pounds. Very large fish are harder
to handle and less dependable as
spawners.
Sexing of broodfish is
most easily accomplished in the
spring when ripe females should
have distended abdomens and
males freely emit milt when
stripped. Bass larger than 13 to 15
inches usually can be sexed by
examining the scaleless area
around the urogenital opening.
This scaleless area is almost circular
in males but more elongated in
females.
The surest way of sexing
is to gently insert a capillary tube
into the urogenital vent to remove
eggs or milt.[b][/b]