general classification
DESCRIPTION
General Classification. Spiny-rayed fish Hard, sometimes sharp spines in dorsal fin Ex. Yellow Perch. General Classification. Soft-rayed fish Dorsal fin is without hard spines Usually have only 1 dorsal fin Adipose fin: small, fatty fin near caudal fin Ex. Trout. Fish Adaptations: Scales. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/1.jpg)
General Classification Spiny-rayed fish Hard, sometimes sharp spines in dorsal fin Ex. Yellow Perch
![Page 2: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/2.jpg)
General Classification Soft-rayed fish Dorsal fin is without hard spines Usually have only 1 dorsal fin Adipose fin: small, fatty fin near caudal fin Ex. Trout
![Page 3: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/3.jpg)
![Page 4: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/4.jpg)
Fish Adaptations: Scales Hard, sometimes colorful, overlapping
plates Provides protection from predators and
disease/ infection
![Page 5: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/5.jpg)
4 Types of Scales 1. Placoid: rectangular base, under the
skin, spines project to the surface of the skin
New scales are added, do not grow with the fish
Examples: sharks, skates, rays
![Page 6: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/6.jpg)
Shark: Placoid Scales
![Page 7: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/7.jpg)
Skate: Placoid Scales
![Page 8: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/8.jpg)
Ray: Placoid Scales
![Page 9: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/9.jpg)
4 Types of Scales 2. Ganoid: rhombus shape, connected by
peg and socket joints Do not grow with fish, new ones are added Examples: Gar, Paddlefish, Sturgeon
![Page 10: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/10.jpg)
Longnose Gar: Ganoid Scales
Gar
![Page 11: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/11.jpg)
Sturgeon: Ganoid Scales
![Page 12: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/12.jpg)
Paddlefish: Ganoid Scales
![Page 13: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/13.jpg)
4 Types of Scales 3. Ctenoid: overlapping, allow great
maneuverability as fish bends Grows with fish, found in spiny rayed fish
![Page 14: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/14.jpg)
Ctenoid Scales
![Page 15: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/15.jpg)
4 Types of Scales 4. Cycloid: same as ctenoid functions Smooth margin, soft-rayed fish Grows with fish
![Page 16: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/16.jpg)
Cycloid Scales: Catfish
![Page 17: General Classification](https://reader035.vdocument.in/reader035/viewer/2022070404/56813b29550346895da3ec8d/html5/thumbnails/17.jpg)
REVIEWComplete back of note sheetGive different fish examples for
the top 2
2 minutes!!!! GO!!!