fish notes: notes on class osteichthyes including scales, gills, air bladder, and video links
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Notes on Class Osteichthyes including scales, gills, air bladder, and video linksTRANSCRIPT
Class Osteichthyes:
FISHPPT. by,
Robin D. Seamon
•Vertebrates
•Cold-blooded
•Have gills: breathe oxygen out of the water
•Scales
•Fins: allows fish to be mobile
•Air bladder
Dorsal fin
Pectoral fin
Pelvic fin
Gills Anal fin
Caudle fin
•Scales overlap one another.
•They’re covered in mucous for speed.
Fish ‘breathes’ oxygen from the water molecules:
http://upload.wikimedia.org/wikipedia/commons/e/e6/Gills_(esox).jpg
Air bladder: sac inside the body that determines how deep it will go (or float)
Shape of the mouth lets you know how it eats.
Top-feeder Bottom-feeder
Fish Facts:
•Fish have been around over 450 million years. (well before dinosaurs!)
•There are over 25,000 identified fish species & thought to be over 15,000 more!
•40% fish live in freshwater, but only .01% of earth covered with freshwater.
•Spotted climbing perch can hold oxygen enough to ‘crawl’ onto land.
Fish Facts:
•Some fish like sharks don’t have air bladders & must swim constantly or fall to the bottom.
•Some make sounds by grating teeth or swim bladder.
•Some species can fly (glide), skip along the surface, or ‘crawl’ up rock.
•Some fish have a special organ that acts like a ‘radar’ to see in dark/murky water.
Fish Facts:
•The great whale shark is the largest fish: up to 50 ft. long!
•The smallest fish is the Phillipine goby: 1/3 inch long!
•Fish feel pain & stress like other animals.
•Many tropical fish sold in pet stores are from South & Central America, Asia, and Africa.
Fish Video
Fish Video 1
Fish Video 2: transparent head
Fish Video 3: hop along fish
Fish Video 4: clownfish
BIG fish WILD
The Wild Classroom LINK & VIDEO
Resources:
http://www.peteducation.com/article.cfm?cls=16&cat=1791&articleid=586