Class Agnatha - jawless fish hagfish and lampreys - they suck blood or bore into their bodies and eat them from the inside out.

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Presentation transcript:

Vertebrates Phylum Chordata Fish (3 classes) Ichthyology- study of fish

Class Agnatha - jawless fish hagfish and lampreys - they suck blood or bore into their bodies and eat them from the inside out.

Hagfish

Hagfish

Hagfish slime

Lampreys

lamprey

Lamprey Mouth

Lamprey Damage

- sharks, rays and skates - skeleton made of cartilage 2.Class Chondrichthyes - cartilaginous fish - sharks, rays and skates - skeleton made of cartilage - rough sand papery skin

Chondrichthyes

Cartilaginous skeleton

Denticles

Shark Skin

Shark Skin

SHARKS 250 species - found throughout oceans at all depths, but mostly in tropical coastal waters;a few found in freshwater (bullshark) - all sizes from 10 in.(spiny pygmy shark) to 60 ft.(whale shark) - most carnivorous predators, some peaceful plankton feeders.

Sharks

Bull Shark

Spiny Pygmy Shark

Whale Shark

Sand Tiger Shark

Tiger Shark

Leopard Shark

Nurse Shark

Basking Shark

Saw Shark

Stingrays and Skates have flat bodies and mostly live on the bottom - gill slits are on the underside - pectoral fins are flat and expanded,look like wings - eyes on top of the head - stingrays have a whip like tail with a stinging spine - skates do not have a whip like tail with spines

Sting Rays

Sting Rays

Stingray

Manta Ray

Stingray Stinger

Skates

Skate

Skate

Skates

Class Osteichthyes Bony Fishes - have a skeleton of bone - have thin, overlapping scales covered with protective mucus - have gill covers or operculum - has a swim bladder, a gas filled sac that adjusts its buoyancy - highly maneuverable fins

Bony Fish

Scales

Gills

Operculum

Boxfish

Mahi Mahi

Lionfish

Crocodile Fish

Flying Fish

Grouper

Halibut

Mola

Mola

Parrotfish

Sailfish

Scorpion fish

Tuna

Flounder

Salmon

Wolf eel

Coelacanth

Viperfish

Gulper Eel

Anglerfish