Fish Characteristics of fish Aquatic Ectothermic Gills Most

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Fish

Fish

Characteristics of fish Aquatic Ectothermic Gills Most have paired fins

Characteristics of fish Aquatic Ectothermic Gills Most have paired fins

Dorsal fin (balance) Lateral Line System Pectoral fin (steering) Pelvic fin (steering) Caudal fin

Dorsal fin (balance) Lateral Line System Pectoral fin (steering) Pelvic fin (steering) Caudal fin (forward swim) Anal fin (balance)

Lateral Line System - senses vibrations in the water

Lateral Line System - senses vibrations in the water

Fish Anatomy - Organ Systems (1) Liver, (2) stomach, (3) intestine, (4) heart, (5)

Fish Anatomy - Organ Systems (1) Liver, (2) stomach, (3) intestine, (4) heart, (5) swim bladder, (6) kidney, (7) testicle, (8) ureter, (9) efferent duct, (10) urinary bladder, and (11) gills.

Respiratory System Gills use countercurrent exchange for oxygen OPERCULUM covers the gills

Respiratory System Gills use countercurrent exchange for oxygen OPERCULUM covers the gills

Swim Bladder - found in ray finned, bony fish Used for flotation and for

Swim Bladder - found in ray finned, bony fish Used for flotation and for air storage

Circulation 2 chambered heart Single loop circulation heart → gills → body

Circulation 2 chambered heart Single loop circulation heart → gills → body

Fish have a two chambered heart – blood is passed over the gills where

Fish have a two chambered heart – blood is passed over the gills where it picks up oxygen → SINGLE LOOP

Single Loop Circulation vs Double Loop

Single Loop Circulation vs Double Loop

Synthesis: Compare the circulatory system of a fish to the circulatory system of a

Synthesis: Compare the circulatory system of a fish to the circulatory system of a mammal. What are similarities? What are differences? Discuss with your lab partner and write down your answer, be prepared to share with the class.

Digestive System Esophagus → Stomach → Pyloric Caeca → Intestine → Anus (vent)

Digestive System Esophagus → Stomach → Pyloric Caeca → Intestine → Anus (vent)

4. The Nervous System - Cerebrum - thinking, voluntary activities - Cerebellum - coordination

4. The Nervous System - Cerebrum - thinking, voluntary activities - Cerebellum - coordination - Medulla Oblongata - basic functions, organs - Optic Lobe - vision medulla

SCALES Scales cover and protect the fish Mucus on scales help fish swim The

SCALES Scales cover and protect the fish Mucus on scales help fish swim The rings on a scale tell the fish’s age

Check Yourself 1. Fish have ___________ loop circulation. Mammals and birds have __________ loop

Check Yourself 1. Fish have ___________ loop circulation. Mammals and birds have __________ loop circulation. 2. The two chambers of the fish heart are the ________ and _______ 3. Blood leaves the heart goes to the gills and then to the ______ before it returns to the heart. 4. The covering of the gills is the _____________ 5. _____________ increase surface area of stomach for digestion. 6. The part of the brain used for thinking and learning is the ___________ 7. The part of the brain used for balancing is the ___________ 8. The _________ system senses vibrations. 9. Fin used forward motion is the _________________ 10. ___________ exchange pulls oxygen from the water into the blood of a fish.

Fish Reproduction Spawning – fish lay eggs that are fertilized externally Some fish bear

Fish Reproduction Spawning – fish lay eggs that are fertilized externally Some fish bear live young - FRY (baby fish) This 1 minute video shows a lemon shark give birth to live young. Some sharks lay eggs.

Types of Reproduction ●Oviparous (lays eggs) ●Ovoviviparous (eggs stay in mom) ●Viviparous (babies get

Types of Reproduction ●Oviparous (lays eggs) ●Ovoviviparous (eggs stay in mom) ●Viviparous (babies get nourishment from placenta)

Take notes over this short video that explains spawning behavior in salmon.

Take notes over this short video that explains spawning behavior in salmon.

How is the respiration rate of fish affected by changes in temperature? This lab

How is the respiration rate of fish affected by changes in temperature? This lab will ask you to lower the temperature of a fish and measure the number of breaths it takes.