Fish Vocab

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Osteichthyes

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Fish Vocabulary for Zoology Class

16 Terms

1

Osteichthyes

Jawed fish with skeletons composed of bone

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2

Operculum

Hard plate that covers, protects, and works like a pump to circulate water over the gills.

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3

Cartilage

Lightweight, strong, flexible tissue

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4

Nephrons

Tube like unit that regulate salt and water levels in the body.

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5

Agnathans

Jawless fish, like hagfish or lampreys.

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6

Ventricle

Second chamber of the heart. Pumps blood to the gills to pick up oxygen.

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7

Scale

Hard plate like structure on the skin of most fish.

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8

Gill-Filaments

Finger like projections through which gasses are exchanged.

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9

Chondrichthyes

Cartilaginous jawed fish

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10

Spawning

Type of external fertilization that most fish use, where sperm and egg are released near one another

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11

Single Loop

Type of circulation of blood that fish have

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12

Swim Bladder

Bony fish use this special gas filled sac to stay bouyant

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13

Vertebrae

Individual segments that make up a backbone

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14

Lateral Line

Sensory system that extends along the sides of a bony fish’s body

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15

Lobe Finned

Lone fleshy fins supported by a central core of bones

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16

Atrium

The first chamber of the heart. Pumps blood to the ventricle

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