Fish ID
Most popular sport fish in Minnesota
Walleye
What are nostril openings on fish called?
Nares
What internal part removes oxygen from the water?
Gills
What fin keeps the fish from rolling over?
Are fish cold or warm blooded?
Cold Blooded
A non-native fish that is now the most stocked Trout or Salmon in Minnesota
Rainbow Trout
Name one of the two parts that help fish hear
Lateral Line or Otoliths
Do carnivores or herbivore fish have larger stomachs?
Carnivores
True or False? The number of scales remains constant as fish matures.
True
Which are bigger male paddlefish or female?
Female
Which Fish Shape has the following characteristics?
Explosive ambush predators, torpedo like body, large caudal fin, and a dorsal fin that are further back.
Lie-In-Wait Predators
Name the whisker like structures that some fish have above and below their mouth to help them find food.
Barbels
What internal part helps fish adjust position: inflates or deflates depending on whether the fish is surfacing or diving.
Swim Bladder
Which fish part protects fish from infection, diseases, fungi, and parasites
Mucus Layer
True or false. Female Paddlefish spawn every other year
False -- Varies from 2-7 years.
Name a fish with a deep bodied (pan fish) shape.
Bluegill, pumpkinseed, Crappie, Yellow Perch, etc
At what angle to fish see the best?
Right Angle
What internal part act as filters that capture small food from water as the fish swims.
Branchiospines
Superior Mouth
What invasive species had a toothed suction cup mouth?
Sea Lamprey
Name the prehistoric fish that uses its snout to detect zooplankton.
Paddlefish
How much faster does sound move underwater?
5x
The swim bladder occupies what percent of a fish's body?
7-11%
Name the bony flap that protects the gills from harm. It opens and closes to allow water to pass over the gills.
OPERCULUM
Which MN Governor founded DNR?
Governor Harold Stassen