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Freshwater Fish. Wildlife and Recreation Management Mr. Lemmons. IDENTIFYING FISH. Shape and number of spines Number of type of scales Teeth Eye diameter Internal anatomy Location of specific body parts. Why do fish change color?. STRESS!! 1. Being hooked 2. Being removed from water

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slide2
IDENTIFYING FISH
  • Shape and number of spines
  • Number of type of scales
  • Teeth
  • Eye diameter
  • Internal anatomy
  • Location of specific body parts.
slide3
Why do fish change color?

STRESS!!

1. Being hooked

2. Being removed from water

3. Environmental changes

4. Spawning

slide4
Caudal Fin

Dorsal Fin

Operculum

Pectoral Fin

Anal Fin

Pelvic Fin

bluegill1
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.

Aka: Bream, Brim, Perch, Sunfish, Sunperch

Average size 4 - 6 oz

State Record 2.02 Lampasas River

Bluegill
crappie1
Both Black and White (black = 7-8 dorsal spines, white = 6 dorsal spines.)

Very thin, perhaps the thinnest of all sunfish

8-10 inches is common

WHITE CRAPPIE:

Nest Builders

Average 3/4 to 1 1/2 lbs.

Crappie
slide11
WHITE CRAPPIE CONT.
  • State Record 4.56 lbs. Navarro Mills Lake
  • Vertical Bars on the side
  • BLACK CRAPPIE
  • North and East Texas
  • Irregular Dark side blotches
  • Average size 3/4 - 1 1/4 lbs.
  • State Record 3.92 lbs- Lake Fork
yellow perch1
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

Yellow Perch
largemouth bass1
Largemouth Bass
  • Upper jaw extends beyond the eye
  • Deep notch in dorsal fin
  • Caudal fin is forked and rounded
  • Brown and gold eyes
  • Dark, irregular horizontal stripe along lateral line
  • Dorsal Fin almost divided
  • 12-13 Rays in Soft Dorsal Fin (rear section)
  • aka: Black bass, green trout, bigmouth bass, lineside bass
  • 2-6 lbs average
  • State Record 18.18 lbs. - Lake Fork
slide17
White Bass

Originated in Caddo Lake

State wide

Double dorsal fin

aka: Sand bass, barfish, streaker, silver bass

1 to 1 1/2 pounds average

State record 5.56 pounds - Colorado river

slide18
Striped Bass

Introduced

Largest member of the bass family

2 sharp points on gill cover

7 - 8 horizontal stripes

State record 53 pounds - Brazos river

slide19
Yellow Bass

Often confused with white bass

Lower 2 stripes broken

Average size 1/2 pound

State record 1.44 pounds – Cedar Creek Lake

smallmouth bass1
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
  • Large clear water lakes
  • State record 7.93 pounds - Lake Meredith
rock bass1
Rock Bass
  • Brown eye
  • Brown coloration, with light vertical stripes along the sides
  • Heavy bodied
  • aka: warmouth, goggle eye
  • Average size 8 oz
  • State Record 1.3 lbs- Town Lake
slide24
Other Bass
  • Guadalupe Bass
  • Flowing waters
  • aka: Guadalupe spotted bass
  • State record 4.69 - San Marcos River
slide25
Other Bass
  • Spotted Bass
  • Native to East Texas
  • Confused with Largemouth
  • Kentucky spotted bass, spotted black bass
  • State record 5.62 pounds – Lake Alan Henry
  • Hybrid Striped Bass
  • White Bass X Striped Bass
  • State Record 19.66 pounds - Lake Ray Hubbard
channel catfish1
Channel Catfish
  • Scaleless, tough skin
  • 8 barbels
  • Three sharp spines, (1 dorsal, 2 pectoral)
  • Black spots on lower side of body
  • Popular with Trotliners
  • aka: Willow cat, forked-tail cat
  • Deeply forked caudal fin
  • Excellent table quality
  • Average 2-3 lbs.
  • State Record 36.5 lbs - Pedernales River
slide29
Flathead Catfish
  • Scaleless, tough skin
  • 8 barbels
  • Three sharp spines, (1 dorsal, 2 pectoral)
  • No spots on lower side of body
  • squared caudal fin
  • aka: Yellow cat, opelousas, mud cat, shovelhead cat
  • flattened head
  • lower lip protrudes past upper lip
yellow bullhead1
Yellow Bullhead
  • Scaleless, tough skin
  • 8 barbels
  • Sharp spines (1 dorsal, 2 pectoral)
  • Black, Brown or Yellow species
  • Polliwog, chucklehead cat
  • Caudal fin is slightly notched and squared
  • Texas nongame fish
common carp1
Common Carp
  • Rough fish
  • Very scaly
  • Barbels
  • Considered a nuisance to American Anglers, prized in Europe
  • Much like a sucker fish
  • aka: German or European Carp
  • Nongame Fish
grass carp1
Grass Carp
  • Harmful to Native resources
  • 100% Herbivorous
  • Used for vegetation control
  • Texas Nongame
  • Triploid (sterile) are legal for use in Texas only
  • Must have permit to obtain.
  • Aka: White amur
slide37
Freshwater Drum

Gaspergou, sheepshead

Only freshwater member of drum family

Forces air into smaller air bladders

State record 34.7 pounds - Texoma

slide38
Gar

Alligator Gar

Longnose Gar

Spotted Gar

Shortnose Gar

slide39
Alligator Gar

Others - Spotted, Longnose, Shortnose

Air breather - can survive in stagnant water

Long, cylindrical body

Hard, interlocking scales

State record 279 pounds - Rio Grande River

slide40
Fish need areas of protection

Streams and Rivers:

Riffles, pockets, pools

Overhangs

Current breakers

Dams, waterfalls

slide41
Fish need areas of protection

LAKES:

Depth Changes

Weedy Shallows

Gravel Bars

Channels

Road Beds

Trees & Obstructions

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