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Osteichthyes – “bony fish” • Examples – trout, carp, goldfish, tuna

Osteichthyes – “bony fish”

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Osteichthyes – “bony fish”. Examples – trout, carp, goldfish, tuna. Success. Most successful among the vertebrates – largest # of species . over 29,000 species. Ichthyology. Study of fish. Traits. Skeleton of bone. Traits. jaws. Parrot fish. Sheepshead fish. Traits. - PowerPoint PPT Presentation

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Page 1: Osteichthyes  – “bony fish”

Osteichthyes – “bony fish”

• Examples – trout, carp, goldfish, tuna

Page 2: Osteichthyes  – “bony fish”

Success

• Most successful among the vertebrates – largest # of species

over 29,000 species

Page 4: Osteichthyes  – “bony fish”

Traits

• Skeleton of bone

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Traits

• jaws

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Sheepshead fish

Parrot fish

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Traits• Mucousy skin with overlapping scales

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Traits

• Paired fins

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Traits

• 2 chambered heart

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Traits

• ectotherms

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Traits

• Most are oviparous or ovoviparous

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Traits

• Homocercal tail fin

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Traits

• 1 pair of gill slits covered by an operculum

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Traits

• Swim bladder

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Spawning

• Reproductive process of fish involving external fertilization

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• Roe – fish eggs

• Milt – fish sperm

• Fry – baby fish

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Fish structure

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Nostrils

• for smell only

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Lateral line

• Detects vibrations

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Operculum

• Covers and protects gills, also pumps water over gills so they don’t have to swim constantly

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Fins

• More flexible which allows more mobility

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Dorsal

• Fin along the back

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Sailfish

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Ocean Sunfish – their large dorsal fin often gets mistaken for a shark’s

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Caudal

• Tail fin

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Pectoral

• Anterior paired fins

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Flying fish

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Pelvic

• Posterior paired fins

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Anal

• Fin behind the vent or anus

Page 32: Osteichthyes  – “bony fish”

Scales

• Can tell how old and what species it is

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How old is the fish this scale came from?

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Mucous

• Escape predators, less water resistance, prevents skin infections

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Swim bladder

• Controls buoyancy

Dar

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Lungfish

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Puffer fish

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Anglerfish

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Seahorse

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Mr. Mom

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Gulper Eel

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Moray Eel

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Flounder

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Barracuda

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Cowfish