partly worked example

1. FISH FACTS
FISH CLASSIFICATION
David Orchard Year 7
2011

2. SHELLFISH
Shellfish are broadly divided into two categories—
molluscs and crustaceans.
molluscs
crustaceans

3. MOLLUSCS CAN BE DIVIDED
INTO THREE CATEGORIES:
Uni-valve molluscs have one shell—periwinkles,
whelks and limpets. These molluscs can be found on
the seashore.
periwinkles limpets
whelks

4. BI-VALVE MOLLUSCS
have two shells hinged at one end—mussels, oysters
and scallops.

5. CEPHALOPODS
have no outer shell, just a single internal one called a
pen. Examples include squid and cuttlefish.

6. CRUSTACEANS
are mobile creatures with hard, segmented shells and
flexible joints. Examples include prawns, shrimp, crab
and lobster.

7. FINFISH-
Finfish are divided into whitefish and oil-rich fish.

8. WHITEFISH
are sometimes referred to as "lean fish" because all
the oils are contained in the liver, which is removed
during gutting.

9. WHITEFISH ARE FURTHER
SUB-DIVIDED INTO:
Round Whitefish—Examples include cod, haddock,
hake and pollock.
cod
hake
haddock
pollock

10. WHITEFISH ARE FURTHER
SUB-DIVIDED INTO:
Round Whitefish—Examples include cod, haddock,
hake and pollock.
cod
hake
haddock
pollock

11. FLAT WHITEFISH
Examples include plaice, lemon sole, brill, turbot and
black sole.