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16 Cards in this Set
- Front
- Back
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Locomotion
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Trunk and tail used for propulsion
-entire body: slow -tail only: fast |
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Buoyancy
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-sharks move forward to prevent sinking
-Bony fish have swim bladders (gas filled) |
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Respiration
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gills
operculum covering gills |
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Reproduction
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most dioescious, external fertilization
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Agnatha
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-jawless fish
-no vertebrae (cranium present) -eel-like body -no jaws, internal bones, scales or paired fins -pore-like gill openings -includes: hagfish, lampreys |
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Chondrichthyes
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-Cartiliginous fish
-well-developed sense organs -powerful jaws and swimming musculature -primarily predators -includes: sharks, rays, skates |
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Chimaeras
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-large eyes, no scales
-mixture of shark-like and bony-like traits -includes: ratfish, rabbitfish, spookfish, ghostfish |
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Osteichthyes
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-bony fish
-pectoral and pelvic fins supported by bony girdles embedded in body musculature -operculum -specialization of jaw and feeding mechanism -high activity -includes: fleshy-finned (lungfish, lobe-finned) and ray-finned (familiar bony fish) |
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Lamprey
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Agnatha
-marine and freshwater -no air bladder -7 pairs gill openings |
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Hagfish
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Agnatha
-marine -12 pairs gill slits -keen sense of smell, virtually blind -attach to prey with toothed plates and rasp away tissue with tongue -male and female gonads present, only one functional -no larval stage -covered in slime |
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Shark
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Chondrichthyes
-Predaceous -5 to 7 gill slits -spiracle behind each eye -leathery skin with placoid scales of dentine -lateral line used to locate objects -can detect bioelectric fields generated by animals |
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Ray
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Chondrichthyes
-propel bodies with wave-like motions of pectoral fins -dorsoventrally flattened bodies -gill openings on underside of head -large spiracles -slender tails with one or two spines |
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Skates
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Chondrichthyes
-group of rays characterized by muscular tail and arrangement of fins -produce mermaid's purse |
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Lungfish
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Osteichthyes
-fleshy-finned fish -lungs and gills -lobed fins can be used like legs -some can live outside of water (Propterus) |
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Coelacanth
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Osteichthyes
only living representative of the lobe-finned fish |
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types of fish
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agnatha
chondrichthyes chimaeras osteichthyes |
