Terms
To which phylum does fish belong?
Chordata
What do fish use for breathing?
Gills
Give 2 examples if cartilaginous fish
Rays and sharks
What time of day are sharks most active?
Evening, night
What are the potential impacts of overfishing on fish populations and marine ecosystems?
Decreased fish populations, imbalanced ecosystems, and biodiversity loss.
What is cartilage?
Tough, flexible connective tissue.
True or False: Fish are cold-blooded animals
True
What are the main differences between cartilaginous fish and bony fish?
Cartilaginous fish have skeletons made of cartilage rather than bone
True or False: Most fish lay eggs, but some give birth to live young.
True. Most fish lay eggs, but some species, like certain types of sharks and rays, give birth to live young.
What valuable nutrients for humans are found in fish?
Protein, omega-3 fatty acids, phosphorus, calcium, iron etc.
What does solitary mean?
Hunting along rather than in group
True or False: seahorses are fish
True. They just underwent some adaptations.
What are 2 classes of jawless fish?
Hagfish and lamprey
Explain what happens if you turn the shark upside down
It will get into transe, unable to move, being in a sleep mode
Name 3 precautions than you need to follow to avoid being eaten by sharks
Not swimming at night, swimming in groups, not wearing flashy swimsuit or jewelry, not bathing if you have bruises, attacking the shark back
Explain Extertal fertilization
External fertilization occurs when eggs and sperm are released into the water, where fertilization takes place
What is the purpose of the lateral line in fish anatomy?
detecting changes in water pressure and movement in the surrounding environment.
How do ray-finned and lobe-finned fish differ?
Ray Finned fish don't have muscles in their fins, lobe Finned fish have fleshy fins.
Give an example of fish that travels 1000 km to reproduce
Salmon
What material may be found in dish due to eater contamination?
Mercury
Explain ectotermic
Ectothermic organisms, also known as cold-blooded animals, rely on external sources of heat to regulate their body temperature.
What is the function of the swim bladder in fish?
The swim bladder in fish serves as a buoyancy organ, helping the fish to control its position in the water
Recognize this class of fish: ~70 species, soft skin, no paired fins, no jaws or bones, no scales, Live in cold seawater
Hagfish
True or False: Sharks are social animals that form complex, long-term relationships with other sharks.
False, sharks are solitary
Explain why does freshwater fish can't live in saltwater and vice versa?
Osmosis, water flow from area with lower salt concentration, to the area with higher salt concentration. Saltwater fish will balloon in freshwater, freshwater fish will dry out in saltwater.