Fish Biology & Techniques - Species ID

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Last updated 12:20 PM on 10/5/26
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14 Terms

1
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<ul><li><p>Opercular flap represents gibbous moon</p></li><li><p>Bluish bands on face</p></li><li><p>Orange belly</p></li></ul><p></p>

  • Opercular flap represents gibbous moon

  • Bluish bands on face

  • Orange belly


Lepomis gibbosus (Pumpkinseed)

2
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<ul><li><p>6-8 vertical bars</p></li><li><p>Dark opercular flap</p></li></ul><p></p>

  • 6-8 vertical bars

  • Dark opercular flap


Lepomis machochirus (Bluegill)

3
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<ul><li><p>Dark vertical bars</p></li><li><p>Black opercular spot</p></li><li><p>6 dorsal spines</p></li></ul><p></p>

  • Dark vertical bars

  • Black opercular spot

  • 6 dorsal spines


Pomoxis annularis (White Crappie)

4
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<ul><li><p>Irregular mottling on side</p></li><li><p>No opercular spot</p></li><li><p>7-8 dorsal spines</p></li></ul><p></p>

  • Irregular mottling on side

  • No opercular spot

  • 7-8 dorsal spines


Pomoxis nigromaculatus (Black Crappie)

5
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<ul><li><p>Barbels pale/yellow to brown</p></li><li><p>Mottled</p></li></ul><p></p>

  • Barbels pale/yellow to brown

  • Mottled


Ameiurus nebulosus (Brown Bullhead)

6
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<ul><li><p>Yellow barbels</p></li><li><p>Leather-colored skin</p></li></ul><p></p>

  • Yellow barbels

  • Leather-colored skin


Ameiurus natalis (Yellow Bullhead)

7
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<ul><li><p>V-shaped lips with papillae (bumpy) texture</p></li><li><p>Uncurved dorsal fin</p></li><li><p>38-46 lateral line scales</p></li><li><p>Grey caudal and dorsal fins</p></li></ul><p></p>

  • V-shaped lips with papillae (bumpy) texture

  • Uncurved dorsal fin

  • 38-46 lateral line scales

  • Grey caudal and dorsal fins


Moxostoma anisurum (Silver Redhorse)

8
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<ul><li><p>Plicate lip texture</p></li><li><p>Small head to body size</p></li><li><p>Concave dorsal fin</p></li><li><p>42-44 lateral line scales</p></li><li><p>Red pigment in caudal and dorsal fins</p></li></ul><p></p>

  • Plicate lip texture

  • Small head to body size

  • Concave dorsal fin

  • 42-44 lateral line scales

  • Red pigment in caudal and dorsal fins


Moxostoma macrolepidotum (Shorthead Redhorse)

9
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<ul><li><p>Green color</p></li><li><p>Horizontal black stripe</p></li><li><p>Maxillary extends past eye</p></li></ul><p></p>

  • Green color

  • Horizontal black stripe

  • Maxillary extends past eye


Micropterus nigricians (Largemouth Bass)

10
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<ul><li><p>Olive/brown color</p></li><li><p>Vertical bars</p></li><li><p>Maxillary does not extend past eye</p></li></ul><p></p>

  • Olive/brown color

  • Vertical bars

  • Maxillary does not extend past eye


Micropterus dolomieu (Smallmouth Bass)

11
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<ul><li><p>12-18 submandibular pores</p></li><li><p>10-50% of cheek has scales</p></li><li><p>30-50% of operculum has scales</p></li><li><p>16-18 branchiostegal rays</p></li></ul><p></p>

  • 12-18 submandibular pores

  • 10-50% of cheek has scales

  • 30-50% of operculum has scales

  • 16-18 branchiostegal rays


Esox masquinongy (Muskellunge)

12
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<ul><li><p>10-11 submandibular pores</p></li><li><p>90-100% of cheek has scales</p></li><li><p>30-60% of operculum has scales</p></li><li><p>13-16 branchiostegal rays</p></li></ul><p></p>

  • 10-11 submandibular pores

  • 90-100% of cheek has scales

  • 30-60% of operculum has scales

  • 13-16 branchiostegal rays


Esox lucius (Northern Pike)

13
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<ul><li><p>8-9 submandibular pores</p></li><li><p>95-100% of cheek has scales</p></li><li><p>95-100% of operculum has scales</p></li><li><p>14-17 branchiostegal rays</p></li></ul><p></p>

  • 8-9 submandibular pores

  • 95-100% of cheek has scales

  • 95-100% of operculum has scales

  • 14-17 branchiostegal rays


Esox niger (Chain Pickerel)

14
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<ul><li><p>8 or less submandibular pores</p></li><li><p>11-13 branchiostegal rays</p></li></ul><p></p>

  • 8 or less submandibular pores

  • 11-13 branchiostegal rays


Esox americanus americanus (Redfin Grass Pickerel)