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Transcript

  • 1. FISH FACTS by Hamza year 7
  • 2. ShellfishShellfish are broadly divided into two categoriesmolluscs and crustaceans. 
  • 3. MolluscsUni-valve molluscs have one shell—periwinkles, whelksand limpets. These molluscs can be found on theseashore. 
  • 4. Cephalopodshave no outer shell, just a single internal one called apen. Examples include squid and cuttlefish. 
  • 5. Bi-valve molluscshave two shells hingedat one end—mussels,oysters .
  • 6. FinfishFinfish are divided into cuttlefish and oil-rich fish.
  • 7. Crustaceansare mobile creatures with hard, segmented shells andflexible joints. Examples include prawns, shrimp, craband lobster. 
  • 8. FinfishFinfish are divided into whitefish and oil-rich fish.
  • 9. Whitefishare sometimes referred to as "lean fish" because all theoils are contained in the liver, which is removed duringgutting.
  • 10. FinfishFinfish are divided into whitefish and oil-rich fish.
  • 11. Whitefish are further sub- divided intoRound Whitefish—Examples include cod, haddock,hake and pollock.
  • 12. Flat WhitefishExamples include plaice, lemon sole, brill, turbot andblack sole.
  • 13. Cartilaginous FishExamples include ray, dogfish, shark.
  • 14. Oil-Rich fishare so called because the oils are distributedthroughout the flesh of the fish. Mackerel, herring,salmon and trout are examples.
  • 15. Finfish are occasionally classified in a different way—according to where they swim in the sea. Demersal fish are those which live on or near theseabed. Round and flat whitefish fall into this categoryPelagic fish swim in mid-waters or near the surface.Examples are oil-rich fish such as mackerel, herring andtuna.