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What is the specific gravity 1.0
of water?
What is the specific gravity 1.01
of cartilage?
What is the specific gravity 1.1
of muscle?
What is the specific gravity 2.0
of bone?
What is the specific gravity 0.8
of oil/fat?
regulates buoyancy - the swim bladder must always
stay the same size
What does the swim
bladder do?
-when fish goes down, must add air
-when fish goes up, must get rid of air
Where is the swim bladder esophagus
located?
what is countershading dark on top, light on bottom
coloration? (animals from below can't see predators)
What is disruptive verticals lines, breaking up outline of body
coloration?
, what is mimicry fake eye on tail - fish gets attacked from behind
coloration? instead of front
what is warning red, yellow and blue
coloration? -colors that could be poisonous
What is oviparous laying eggs
reproduction? ex. salmon
what is ovoviviparous eggs inside mother, no umbilical chord
reproduction?
what is viviparous eggs inside mother, there is an umbilical chord
reproduction?
What is a cartilaginous no bones only cartilage
fish?
What are forage fish? small fish that get eaten by bigger fish
What strategy do the balling (staying close together in a ball)
forage fish use to survive?
Of the three types of oviparous reproduction
reproduction we learned
about, what type do
forage fish do?
Pacific Herring
What are the 4 forage fish Surf Smelt
we covered in class? Sand Lance
Anchovy
What makes the Pacific -Huge scales
Herring different? -lay eggs on eelgrass
What is a fun fact about
the Pacific Herring?
What makes the Surf Smelt -Has an adipose fin
different? -lay eggs in mud, outer membrane pops and forms
What is a fun fact about pedestal to lift egg out of mud
the Surf Smelt?