This organ pumps blood through the body of the fish
What is the heart
100
This is the part of the body which helps a fish sense motion in the water. It runs across the side of a fish.
What is the lateral line
100
This adaptation is how the Striped Bass keeps itself safe. This is what the fish has on its skin.
What is coloring, darker top and lighter bottom
100
This HRF sits is a "bottom-feeder" and swims with one single fin. It changes colors to protect itself from predators.
What is the Summer Flounder
200
Which organ helps the fish go up and down in the water? This organ fills with air as the fish goes up, and deflates as the fish returns down.
What is the swim bladder
200
These are teeth-like material that cover the outside of a fish's body.
What are scales
200
This is the adaptation that help all fish see better under water.
What is a "rounded" eye
200
This HRF lives in the upper and high middle river. It is a "bottom-feeder" and has barbels on its face. It can see in murky water.
What is the Catfish
300
This organ helps the get oxygen from the water
What are gills
300
This fin sits on the back on the fish and is very strong. It moves up and down to push the fish forward.
What is the caudal fin
300
The Spiny Sand Shark, or any shark, has this adaptation as described in our video. This helps them move quickly and silently through water.
What is the "torpedo" shape, or tiny scales
300
This is a medium-sized HRF which is long and skinny. They can wriggle in-between rocks and "slither" on the river floor.
What is the American Eel
400
This organ is the control center, all sensory information is processed here
What is the brain
400
This fin sits on top of the fish's back and helps to make sudden turns or stops. A fish can have up to three of these.
What is the dorsal fin
400
These are the colors that many HRF are to help them stay protected from predators. Name 3...
What is Brown, Grey, and White
400
This is the largest fish in the Hudson River
What is the Atlantic Sturgeon
500
This organ acts like a "mail person" between the brain and the other parts of the body
What is the spinal chord
500
This fin is on the sides of fish bodies and helps to keep the fish balanced while making small movements. It also helps with direction and moving forward.
What is the pectoral fin
500
This adaptation is one that all boney fish have. It has evolved over millions of years and helps keep the fish floating.
What is the swim bladder
500
This HRF lives only in the lower river. These are the smallest fish that we studied, and has a tiny curly tail which helps them grab onto plants.