Term
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Definition
-can survive in medium 800x the density of air
- able to adjust salt and ph lvl to adapt to their environment
- gills are efficient at extracting oxygen from water
- latteral line allows for the detection of water currents and vibrations |
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Term
| evolutionary tree of chordates |
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Definition
- tunicates- nothings
-lancelets- brain
- hagfishes- head
-lampreys- vertebral column
- sharks,rays- jaws
- ray finned fish - lung/lung derivatives
- lobed finned fishes- lobed fins
- amphibians- legs
- amniotic fluid- reptiles
-mammals- milk |
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Term
| when did fish undergo a massive species radiation |
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Definition
| towards the end of the Ordovician and beginning of the Silurian periods |
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Term
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Definition
Hagfish- marine,scavengers/predators,blind,secrete slime
Lamprey- have a cranium, both marine & freshwater, free living or parasite |
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Term
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Definition
| sharks- 1st species with jaws, cartilaginous endo skeleton, no swim bladder, internal fertilization. |
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Term
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Definition
| 8 species alive today, bony endo skeleton, paired fins supported by small dermal rays, musculature within appendages, vascularized swim bladder which helps with respiration ( lung fishes) |
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Term
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Definition
| swim bladder, bony endo skeleton, paired fins with long dermal rays, musculature within body |
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Term
| what fish are present in arkansas |
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Definition
| small mouth bass, blue catfish, freshwater drum, silver red horse |
|
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Term
| what endangered species are their |
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Definition
| yellowcheek darter, pallid sturgeon, ozark cave fish |
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