Transcript Bluegill

Wisconsin
Game Fish
Identification
Fish External Anatomy
Bluegill
Bluegill
• 1/2 as deep as long
• under 1” thick
• blue color on lower
portion of both the jaw
and operculum
• Color is NOT a good
way to identify
• Dark round spot on the
rear dorsal fin
• 5-9 dark vertical bands
running down their
sides.
Pumpkinseed
Pumpkinseed
• Lateral facial
• Very colorful, but
markings
color is a poor ID
indicator.
• Scarlet spot on opercle
flap
• 7-8 dark vertical bands
• Very similar to
bluegill
Red Eared Sunfish
Red Eared Sunfish
• Produced from a Bluegill and Pumpkinseed
crossbreeds.
• Looks very similar to Bluegill or Pumpkinseed,
but slight differences.
Crappie
Crappie
• Both Black and White (black = 7-8 dorsal
spines, white = 6 dorsal spines.)
• Mottled Markings
• Color is not a good identification indicator
• Very thin, perhaps the thinnest of all sunfish
• 8-10 inches is common
Yellow Perch
Yellow Perch
• Golden Yellow Coloration on their sides. (may vary)
• 6-8 dark vertical bands along their sides
• have two dorsal fins, membrane between the two is
black
• caudal fin is slightly rounded and forked
• 3.5 times as long as deep
• unlike walleyes, they do not have canines
Largemouth Bass
Largemouth Bass
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Upper jaw extends beyond the eye
Deep notch in dorsal fin
Caudal fin is forked and rounded
Golden-brown eye
Dark, irregular horizontal stripe along
lateral line
Smallmouth Bass
Smallmouth Bass
• Upper jaw does not extends beyond the
eye
• Slight notch in dorsal fin
• Caudal fin is not forked and not
rounded
• Red eye
• Dark, vertical stripe along sides
White Bass
White Bass
• Brown eye
• Silver color
• many dark, horizontal lines along
the sides
Rock Bass
Rock Bass
• Brown eye
• Brown coloration, with light
vertical stripes along the sides
Walleye
Walleye
• Canines along the lower jaw
• irregularly-shaped vertical blotches along
sides
• Upper half of body has mottled vertical
stripes
• Dark blotch on back of anterior dorsal fin,
no spots on dorsal fin
• Silvery, opaque marble eyes that glow in
the dark
• White tip on lower edge of caudal fin
Sauger
Sauger
• Very similar to a walleye
• spots on the anterior dorsal fin, no
black blotch at the back of anterior
dorsal
• no white tip on low caudal fin
Northern Pike
Northern Pike
• Hard-muscled, tube-shaped fish with
elongated body and a flat, duckbill snout
• light, bean-shaped markings that run the
length of the body in horizontal rows
• Tiger-striped fins
• Rounded caudal, pelvic and pectoral fins
• Scales cover the cheek and upper half of the
operculum
• 5-7 pores on each side of lower jaw
Muskellunge
Muskellunge
• Hard-muscled, tube-shaped fish with
elongated body and a flat, duckbill snout
• vertical stripes along each side of the fish
• Tiger-striped fins
• Pointed caudal, pelvic and pectoral fins
• No scales on the cheek and upper half of the
operculum
• 6-9 pores on each side of lower jaw
Brook Trout
Brook Trout
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Has an elongated and compressed body
squared-tail
wormlike markings on back and head
red spots along the side of their bodies with
blue halos.
• Lower fins have a white leading edge,
followed by a black border
Brown Trout
Brown Trout
• “X” shaped markings on back and
upper half of their body
• squared tail
• numerous small spots on the head
• inside of the mouth is white
• 10-12 anal rays
Rainbow Trout
Rainbow Trout
• Many small spots on the body
• Distinctive pink horizontal stripe down
each side of the body
• squared tail with spots
• 10-12 anal rays
Lake Trout
Lake Trout
• Silvery color with irregular wormlike
markings on back and dorsal fin
• Light spots in body and tail
• deeply forked tail with spots on edge
leading to the body
• 10-11 rays in their anal fin
• inside of mouth is white
Chinook Salmon
Chinook Salmon
• Some black spots on upper half of
body
• grey-black mouth, with teeth set in
black gums
• squared tail with spots on both halves
• 15-19 anal rays
Coho Salmon
Coho Salmon
• Small black spots on backs, sides above the
lateral line, base of dorsal fin, and upper
half of caudal fin.
• Inside of mouth is grey or black, with teeth
set in white gums
• Slightly forked tail
• 12-15 anal rays
Lake Sturgeon
Lake Sturgeon
• Torpedo-shaped body, turned up tail
• Resembles a shark
• Five rows of shell-shaped plates along
back
• notochord instead of backbone
• Mouth is on underside of body with
barbels
Channel Catfish
Channel Catfish
• Scaleless, tough skin
• 8 barbels
• Three sharp spines, (1 dorsal, 2
pectoral)
• Black spots on lower side of body
• Deeply forked caudal fin
Flathead Catfish
Flathead Catfish
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Scaleless, tough skin
8 barbels
Three sharp spines, (1 dorsal, 2 pectoral)
No spots on lower side of body
squared caudal fin
flattened head
lower lip protrudes past upper lip
Yellow Bullhead
Yellow Bullhead
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Black, Brown or Yellow species
Scaleless, tough skin
6 barbels
Sharp spines (1 dorsal, 2 pectoral)
Caudal fin is slightly notched and
squared
Carp
Carp
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Rough fish
Very scaly
Barbels
Much like a sucker