Commercial Fishing
Which fishing method uses a hook and a line?
longlining
This fish native to the Indian Ocean and the western Pacific Ocean have taken over the Caribbean.
lionfish
Define the term anadromous
Farmed salmon often have infestations of...
sea lice
2/3 of a shark brain is dedicated to this sense.
smell
Which of the following fishing methods encircles a school of fish with a net and then pulls it closed like a drawstring bag
seining
greater surface area
What type of salmon are typically used on farms?
Atlantic Salmon
2-4 years
Halibut have this type of coloration
camoflage
Which is the least sustainable fishing method?
trawling
Are seahorses oviparous, viviparous, or ovoviviparous?
viviparous
At what stage do salmon still carry a yolk sac?
Alevin
True or false: most salmon farms are found in the U.S.
false
The eyes of deep sea fish are often missing...
cones
Which type of fishing has the lowest bycatch rate?
trolling
What do sunfish primarily feed upon?
jellyfish
Blood vessels pull O2 from the water as it runs over the gills of a fish in a process called...
countercurrent exchange
Name one purpose of a salmon hatchery.
Support a protected population of salmon; immune to threats and endangerment that wild populations face
Supplement harvests and created backup population
True or false: tuna fish are viviparous
false--oviparous (broadcast spawners)
$1.6 billion
What habitats are seahorses typically found in?
Seagrass meadows
Why are forage fish important?
-critical role in ocean food chains
-coastal communities rely on them for food/livelihood
Which salmon is considered the least desirable?
Chum Salmon
Why is shark fishing largely unsustainable?
reproduce slowly and only have 3-4 pups; also take a long time to reach sexual maturity