Yellow

Perch
The

yellow


perch


(Perca


flavescens)

is


a

species


of


perch


found


in


the


United


States


and

Canada


and

is


an
extremely

popular


fish

to


raise

in


Aquaponics


especially


in


colder


climates.
Yellow

perch


look


similar


to


the


European


perch


but


are


paler


and

more


yellowish,


with


less


red


in


the


fins.
They

have

6-

8

dark


vertical


bars


on

their


sides.


The


yellow


perch


is


in


the


same


family

as

the


walleye


and
sauger,

but


in


a

different


family

from

the


white


perch.
Yellow

perch


size


can

vary


greatly


between
bodies

of


water,


but


adults

are


usually
between

4-

10

inches


(10

-

25.5


cm)


in


length.
The

perch


can

live


for


up

to


11

years,


and
older

perch


are


often


much


larger

than
average;

the


maximum


recorded


length


is
21.0

inches


(53.3


cm)


and

the


largest
recorded

weight


is


4.2


lb


(1.91


kg).


Large
yellow

perch


are


often


called

"jumbo


perch".
Yellow

Perch

reach


sexual


maturity

at


one

to
three

years


of


age

for


males

and

two

to


three
years

of


age

for


females.


Spawning


occurs


at


the


end

of


April


or


beginning


of


May,


depositing

10,000

to
40,000
eggs

upon


weeds,


or


the


branches

of


trees


or


shrubs


that


have

become

immersed


in


the


water.


After
fertilization

the


eggs

hatch


in


11

to


27

days

depending

on

temperature


and

other


weather

conditions.
Fishing
-


Yellow


Perch

are


fairly

easy

to


catch
and
are


often


caught


while


fishing


for


other
species

in


which

they


share


the


same


body

of
water.

They


are


also


an

important


source


of


food
for

larger

species,


and

therefore


many


fishing
lures
are


designed

to


look


like


yellow


perch.
Yellow

Perch

are


one

of


the


finest


flavored

of


all
panfish,

and

this

has

led


to


inaccuracies

with


use
of

their


name


in


the


restaurant


industry.


Menus
will

sometimes


list


"White


Perch",

"Rock


Bass,


Rock


Perch"


or


simply


"Perch"


that


are


actually


other


species,
usually
panfish


in


the


Centrarchidae


(sunfish)


family.
Ecology

-


Primarily


age

and

body

size


determine


the


diet


of


yellow


perch.


Zooplankton


is


the


primary


food
source

for


young


and

larval


perch.


By

age

one;


they


shift


to


macro

-

invertebrates


such

as
midges

and
mosquitoes.

Large

adult


perch


feed


on

invertebrates,

fish

eggs,


crayfish,


mysid

shrimp,


and

juvenile


fish.


They
have
been


known


to


be

predominantly


piscivorous


and

even

cannibalistic


in


some


cases.


About


20%


of


the
diet

in


a

yellow


perch


over


32

grams


(1.1oz)

in


weight,


consists

of


small


fish.
Maximum

feeding


occurs


just

before


dark,


with


typical


consumption

averaging


1.4%

of


their


body

weight.


Their
microhabitat

is


usually

along


the


shore


among

reeds


and

aquatic


weeds,


docks,


and

other


structures.


They