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The Cartilaginous Fish

The Cartilaginous Fish. Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras. Michael Slonkosky Kyle Moran Matt Gregory. Cartilaginous Characteristics. Jawed Fish Paired Fins Paired nostrils Two Chambered Heart Cartilage Skeleton. External Anatomy of Shark. External Anatomy of Ray.

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The Cartilaginous Fish

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  1. The Cartilaginous Fish Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory

  2. Cartilaginous Characteristics Jawed Fish Paired Fins Paired nostrils Two Chambered Heart Cartilage Skeleton

  3. External Anatomy of Shark

  4. External Anatomy of Ray

  5. Placoid Scales Tough Skin Covering Dermal Teeth/Denticles Continue towards mouth Specialized Version: Teeth

  6. Reproductive System

  7. Skate or Ray?

  8. Differences Reproductive strategies. - Rays: live bearing (viviparous) - Skates are egg laying (oviparous) Appearance Skates have a prominent dorsal fin - The dorsal fin is absent or reduced in rays - Most rays are kite-shaped with whip-like tails containing barb - skates have fleshier tails and lack spines. - rays are generally much larger than skates. - Skates have small teeth - Rays have plate-like teeth for crushing prey. -Protection Rays : stinging spines or barbs skates : thorny projections on their backs and tails

  9. Chimaeras

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