| PHYLUM:
Chordata; CLASS: Osteichthyes; SUPERORDER: Teleostei
FAMILY: Percidae; SUBFAMILY: Luciopercinae
GENUS: Stizostedion SPECIES: vitreum DESCRIBER:
(Mitchill)
Position
of Stizostedion
vitreum in
worldwide arrangement of fish species.
What
are YELLOW WALLEYES?
Yellow Walleyes are
large, elongate 32-50 cm (13-20 in) in length, sport
fish of the family Percidae, subfamily: Luciopercinae.
Overall they are olive-brown to golden-brown
to yellow; their heads and backs are darker; sides are
lighter with golden flecks on their scales; and bellies
are milky white to yellow white. They are widespread
in lakes and rivers from British Columbia eastward through
Québec. Yellow
Walleyes change their food, as growth proceeds, from
aquatic insects and aquatic crustacea to mainly fish. (See: Fishbase)
EARLY
LIFE HISTORY of YELLOW
WALLEYES:
Spawning Season of Adult YELLOW WALLEYE:
Spring, early April to late June.
Where YELLOW WALLEYE Eggs are Found: Males
and females of YELLOW WALLEYES move onto spawning
grounds which consist of rocky and gravelly areas
in white water below falls and dams or in lakes along
gravelly shores and/or on offshore gravelly shoals.
Females broadcast their eggs over the rocks and gravel
where they are left to hatch.
Characteristics
of Eggs: Eggs are demersal, adhesive
prior to water hardening, transparent to slightly
pinkish, single oil globule of diameter of 0.6
mm to 0.77 mm.
Diameter of eggs 1.5 mm to 2.3 mm.
Size
of Babies at Hatching: 5 mm to 8 mm at 12 days to 18 days of incubation.
Movements of YELLOW WALLEYE Babies after hatching: Baby
YELLOW WALLEYES hatch from eggs on gravelly shores
and then move away and begin to swim around in lakes
and/or rivers in shallow water in small numbers,
not in schools. They usually follow and stay with
aggregations of baby yellow perch (Refs. 06,
07).
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