Pool Boiling Heat Transfer at Finned Tubes Influence of Surface Roughness and Shape of the Fins
Fish · 2019-09-18 · Types of Osteichthyes Ray Finned: –Most fish are this type –Fins are...
Transcript of Fish · 2019-09-18 · Types of Osteichthyes Ray Finned: –Most fish are this type –Fins are...
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Fish
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Classification
• Kingdom- Animalia
• Phylum- Chordata
• Sub Phylum- Vertebrata
• Classes- Agnatha, Chondrichthyes, Osteichthyes
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Osteichthyes
Bony Fish: Salmon, Carp, Tuna
Over 20,000 different species
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Types of Osteichthyes
Ray Finned:
– Most fish are this type
– Fins are supported by bony structures called Rays.
Lobe Finned:
– Fins are long, fleshy, muscular, supported by central core of bones.
– Thought to be ancestors of amphibians.
– Examples are: Coelacanth, Lungfish
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Fish Characteristics
• Gills
• Backbone (vertebrae)
• Paired Fins
• Single Loop Circulation
• Two chambered heart
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Fish Anatomy
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Fins
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Different Dorsal Fins
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Fish Respiration
• Water flows over Gills as fish
opens mouth and swims.
• O2 diffuses from the water into
the blood.
• Gills are made of thousands of
gill filaments.
• Gills are covered by the
Operculum.
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Up Close and Personal
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Fish Circulation• Fish heart has 2 chambers
• Single loop circulation
• Blood flows into gills, picks up O2,
goes to the body, returns to the
heart.
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Fish Reproduction• Most fish reproduce sexually, and fertilize their
eggs externally.
• Spawning is the process of fertilizing eggs.
• Baby fish are called FRY.
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Fish Adaptations• Lateral Line System- used to detect
vibrations, orient the fish in water, it is a line of cells running down the side of the fish.
• Operculum- gill cover, movement of operculum allows more water to be drawn in.
• Swim Bladder- a gas filled sac that helps the fish maintain buoyancy. Sharks don’t have a swim bladder!
• Fins- Dorsal, Caudal, Pectoral, Pelvic, Anal.
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Adaptations
Air Bladder Operculum Lateral
Gills Line
Fins
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Bony fish have a bony opeculum
Cartilaginous fish have gill slits
kmle.co.kr
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• 1st Dorsal Fin
• 2nd Dorsal Fin
• Anal Fin
• Caudal Fin
• Eye
• Lateral Line
• Mouth
• Nostril
• Operculum
• Pectoral Fin
• Pelvic Fin
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• 1st Dorsal Fin
• 2nd Dorsal Fin
• Anal Fin
• Caudal Fin
• Eye
• Lateral Line
• Mouth
• Nostril
• Operculum
• Pectoral Fin
• Pelvic Fin