|
Redfish perch, Perca
fluvitalis
This fish is silvery olive
in colour and has paired anal fins that are orange to red in
colour. The Redfin
perch have a spiny
first dorsal, soft second fin and moderately deep body. They
have a relatively large mouth that extends to the rear of the eye and
grow to the maximum size of 50 cm.
This
species was introduced into Australia from Europe by in the 1860’s, and is now widespread in
south-eastern Australia,
including Tasmania and south Australia. This species have also been
found in the Collie, Capel, Margaret, Blackwood, Donnelly and warren river
catchments.
They are a useful to recreational fishermen in some areas of south-western
Australia.
They feed predominantly on planktonic crustaceans,
while larger fish feed mainly on benthos invertebrates. They compete
with native fish for these resources and importantly Redfin perch of all sizes feed on
these endemic teleosts.
This species
spawns in winter and spring in south-western Australia.
The
species of the Redfin Perch has become a pest to native species as
they have to compete against it for food. The western Australian fisheries department
requests that if captured this species should not be returned to the
water.
|