FISH ANATOMY Flashcards
What is the structure of muscles like
Either hypaxial or epiaxial due to limb muscles being small
What are myotomes
Segments of muscles folded into W shapes
Where is the white fast muscle found
In part at top furthest away from the abdominal cavity
Where is the red muscle found
AT SIDES
Where is pink intermediate muscle found
In boundary region between red and white muscle
What is red muscle like?
Good blood supply
Fatigue resistant
High myoglobin and mitochondria content
How much of muscle content is red muscle?
10%
How much of muscle mass is white muscle?
90%
What is white muscle used for
High power sprint swimming
More easily fatigue
Highly glycolytic
What fish don’t have pink muscle
Salmonids
How do sharks/ eels move?
Sinusoid waves
Move along the whole body
How do most fish move?
Caudal part moves
Cranial part stays still
How do tuna and marlin move
Only tail moves, for high speed
What is special about flat fish
Born as normal fish but one of their eyes move to the other side so they have both eyes on one side of face and swim on its side
How do oar fish swim
Drift head down
Ascending and descending on the water column
