1. CIRCULATION COLD BLOODED; Poikilothermic 2 CHAMBERED HEART
RED SWIMMING MUSCLE IN TUNA AND PELAGIC SPECIES
Warmer than body temp.
Myoglobin
Oxygen storage

3. FOOD GETTING FILTER FEEDERS; USE GILL RAKERS,
examples; Herring, Anchovies

4. VARIOUS SPECIALIZED TEETH
SHEEPHEAD; crushing teeth
QUEEN TRIGGER; urchin eater
Parrotfish; Parrot-like beak, coral eater
BARRCUDA; needle-like teeth
PERCH; small teeth

9. Other feeding styles;
“Slurp-gun” technique;
ex. Sea horse

10. SCALES FUNCTION; STREAMLINING, slippery mucous covering
PROTECTION; physical harm and parasites
osmotic balance
balance of water and salts

11. VARIATIONS IN SCALES SCALES ABSENT IN MORRAY EEL
SCALES FUSED IN THE SEA HORSE TO FORM A HARD OUTER COVERING.

12. KIDNEY FUNCTION REMOVAL OF NITROGENOUS WASTE (ammonia, urea etc.)
MAINTENANCE OF OSMOTIC BALANCE

14. FRESH WATER FISH EXCRETES LOTS OF WATER WELL DEVELOPED KIDNEY
SALT WATER FISH
DRINKS LOTS OF WATER
EXCRETES LITTLE WATER
EXCRETES EXCESS SALT (KIDNEYS AND GILLS)

15. REPRODUCTION
OVIPAROUS; eggs fertilized outside the body, development external.
Examples and variations;
Nest builders= stickleback
Mouth Breeders= Jawfish

16. OVIPAROUS (Contd.)
Eggs adrift in the plankton=
pelagic species (swordfish)
Eggs laid on shore (beach)=
Grunion

17. OVOVIVIPAROUS; Fertilization internal. Development internal.
Young are born ‘alive’.
Example= Perch