Chondrichthyes Cartilaginous Fish Skeleton made of cartilage Movable jaws with welldeveloped teeth Rough sand paper like scales made of the same composition of the teeth Sharks amp Ratfish ID: 380187
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Slide1
Class Chondrichthyes
“Cartilaginous Fish”Skeleton made of cartilageMovable jaws with well-developed teethRough sand paper like scales made of the same composition of the teethSlide2
Sharks & Ratfish
Sharks
Adapted for fast swimming and to be predators
Ratfish or Chimeras
Bottom dwellers
Have long “rat-like” tailsSlide3
Rays and Skates
RaysFlattened bodies with gills on the bottom of their bodiesWhip-like tail with stinging spines (venomous)SkatesVery similar to rays but with out the long tail or stinging spinesSlide4
Class Osteichthyes
“Bony Fish”Make of 98% of all fish and over half the vertebrates
Skeleton at least made partially of bone
Thin, flexible, overlapping scales
Mouth located at end of body
Presence of gas-filled sac called a swim bladderSlide5
Body Shape
Body shape is varied and linked to its lifestyleFast swimmer need elongated bodiesSlide6
Body Shape
Short, compressed bodies good for navigating tight places like reefs
Bottom dwellers tend to have flattened shapesSlide7
Body Shape
Elongated shapes are need for life in narrow spacesSome have less generalized shapesSlide8
Body Shape
Some shapes are conducive to camouflage with their environmentSlide9
Exterior Layer