By: Jason Burmeister. Agnatha: Lack a Jaw and Paired fins Skeleton is Cartilaginous They have seven or more paired gills Chondrichthyes: They mainly live.

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Presentation transcript:

By: Jason Burmeister

Agnatha: Lack a Jaw and Paired fins Skeleton is Cartilaginous They have seven or more paired gills Chondrichthyes: They mainly live in marine areas, but some live in freshwater Chondricthyes all are made up of cartilaginous skeleton They all have pectoral fins Osteichthyes: They are characterized by a relatively stable pattern of cranial bones Bony fish usually have swim bladders, which creates a neutral balance between floating and sinking Most have smooth overlapping scales that are ganoid, cycloid, and ctenoid

Kidney Swim Bladder Gonads Intestines Stomach Liver Heart Gills Brain Spinal Chord Spine Muscle Vent

Fish is able to eat a wide variety of food. The food is broken down by the esophagus The food is further digested in the stomach The liver and pancreas add enzymes and chemicals The intestine completes the tract.

Fish get oxygen from the water not the atmosphere Fish use gills to breathe Gills are protected under the operculum Oxygen is absorbed by a thin membrane which covers the gills At the same time carbon dioxide is being released from the blood

Closed Circulatory System Heart Pumps in a single loop From the Heart to Gills From the Gills to the rest of the body From the body back to the heart Two-chambered heart.

Waste is released as ammonia Gills Kidneys Saltwater Fish loose water Special Kidneys

Small brain to body size Sharks has large brains Fore Brain Mid Brain Hind Brain Brain Stem

Exerting force Achieved by contracting muscles Flexion Vector Forces Lateral Movement

Spawning Females lay eggsReproduction Males Fertilize Seed is milt or soft roe Most species spawn in the same place

Agnatha: Chondrichthyes: Osteichthyes: Hag Fish Great White Shark Yellow Fish Tuna Fish

Catfish have 27,000 taste buds (humans have 7,000) There are over 30,000 species of fish Tuna fish can swim up to 43 mph Over 1,000 fish threatened by extinction Sharks and Rays do not have swim bladders.

nimals/fish/fish-biology/reproduction-of-fish/ nimals/fish/fish-biology/reproduction-of-fish/