Transcript Fish
Fish DANIELLE CRISE CHRIS MENCHIO Internal Diagram Nervous System Organs Three Classes of Fish Class Agnatha Nickname: Jawless Fish Examples: Lamprey, Hagfish General Traits: Lack paired fins and bones Lack Jaw Attach to prey with disk shaped sucker Hagfish Traits Bottom dwellers Salt water No jaws Tie themselves into knots- hide from predators Lamprey Traits Lack jaws Sucker mouth Feed off body fluids of prey Live in salt and fresh water Class Chondrichthyes Nickname: Cartilaginous fish Examples: Sharks, Rays, and Skates General Traits: Skeleton made of cartilage Jaws Paired fins Predators Internal fertilization Shark Traits 6-20 rows of teeth 20,000 teeth in a lifetime Lots of lipids Well-developed sense organs Constantly swim Lack air bladder Ray Traits Flat bodies Bottom dwellers Long, whip-like tails Live young Diamond shaped bodies Skates Traits Flat bodies Bottom dwellers Long, whip-like tails Lay eggs Triangular body Class Osteichthyes Nickname: Bony fish Examples: Trout, bass General Traits: Jaws Bony skeleton Paired fins Ray Finned Fish Traits Common fish Air bladder Scales- cycloid Camo for protection in water Lobe Finned Fish Traits Lunged fish: Gills and lungs Shallow ponds Coelacanth fish: Thought to be extinct Lack rays Fleshy skin Fish Adaptations for Life in Water External Diagram Lateral line Dorsal fins eye nostril mouth Caudal fin Anal fin Pectoral fin Pelvic fin gill Adaptations Stream-line body Allows Muscular tail Rapid movement Paired Fins them to move faster through water Move through water Gills Take in O2 release CO2 Gill Structure Adaptations Continued Dorsal Fin Secretes Mucus Increases stability Reduces friction Lateral Line Detects vibrations Fins and their functions Caudal: For forward movement of fish Dorsal: Keep fish upright and stable Anal: Keeps fish moving in straight line Fins and their functions continued Pelvic: Used Pectoral: Used for stopping and moving up and down for stopping and moving up and down Scales: Protection Prevent loss or gain of water Nervous System Purpose: Transmit electrical impulses from brain to rest of body Brain Spinal cord Nerves Sense organs Eyes nose Reproductive System Purpose: Bony fish: To produce viable sex cells External fertilization Cartilaginous fish: Internal fertilization Digestive System Passageway Mouth (entrance for food) Pharynx (connects mouth to esophagus) Esophagus ( passageway for food- leads to stomach) Stomach ( starts digestion) Digestive System Passageway Pyloric ceca ( 2nd part of digestion) Intestine( last part of digestion) Anus ( exit for solid waste) Additional organs of digestion Liver (Makes Bile) Gall Bladder ( stores bile until needed in intestine) Pancreas ( makes insulin) Pathway of Blood Circulatory System Purpose: To deliver oxygen and food Closed circulatory system Low efficiency Clean and dirty blood mixes Pathway of blood 1. Heart pumps blood through arteries 2. Blood picks up O2 and releases CO2 Pathway of blood 3. Gills to body tissues- nutrients and waste are exchanged 4. Blood goes back to heart through veins 2 chambered heart Fish Classification Kingdom: Animal Phylum: Chordates Subphylum: Vertebrates Classes: Jawless Fish (Agnatha) Cartilaginous Fish (Chondrichthyes) Bony Fish (Osteichthyes) Pathway thru Heart Deoxygenated blood returns from body to sinus venosus To large atrium To muscular ventricle To conus/bulbus arteriosus To aorta Activities http://kr021.k12.sd.us/zoology/fish%20web.htm http://www2.sd35.bc.ca/uconnect/salmon/DissectionGa me.html http://quizlet.com/18408424/flashcards http://quizlet.com/53107996/test http://quizlet.com/53107996/scatter Videos https://www.youtube.com/watch?v=pNZQEmGp11k https://www.youtube.com/watch?v=37wCrU4psIw https://www.youtube.com/watch?v=5HMp-GXjHtg https://www.youtube.com/watch?v=zRQIXX-IF7Q https://www.youtube.com/watch?v=gz7Ku_HFNko Works Cited Notes Google images • Website Title: Quizlet • Article Title: Quizlet • Date Accessed: January 05, 2015 • Website Title: YouTube • Publisher: YouTube • Date Accessed: January 07, 2015