A) Seeing fish B) Finding crayfish C) Smelling algae D) Hearing frogs
A) Fish signaling to each other B) Fish getting ready to spawn C) Fish playing D) Fish trying to dislodge parasites
A) Submerged rock B) Fish movement C) Falling leaf D) Wind gust
A) A type of algae B) A deep pool of water C) A large rock in the stream D) A spawning nest
A) Clean gravel B) Fine silt C) Organic muck D) Large boulders
A) A lack of fish B) Low oxygen levels C) Pollution D) A healthy food source for fish
A) Cover such as overhanging vegetation or rocks B) A shallow, slow-moving current C) Completely open and sunlit areas D) A straight, unobstructed channel
A) Fecal matter near the edge of the stream B) Bird activity around the stream C) An oily sheen on the water's surface D) Footprints near the stream bank
A) Increased pollution B) Lower water temperature C) Higher oxygen levels D) Lack of predators
A) Spawning behavior B) Predator activity C) Fish molting D) Natural shedding
A) Muddy water, no food, open space B) Warm water, sunlight, fast currents C) Polluted water, no shelter, slow currents D) Clean water, food, shelter
A) High pollution levels B) Overcrowding C) Lack of food D) Successful reproduction and growth
A) Dawn and dusk B) Midnight C) Anytime equally D) Midday
A) Too many plants B) Disturbance of the stream bed, possibly by fish C) Clear and healthy water D) Lack of oxygen
A) Sparrow B) Kingfisher C) Crow D) Robin
A) Swimming in schools B) Holding in ambush C) Burying in the sand D) Grazing on algae
A) A dry section B) A deep pool C) A calm area D) A fast-flowing section of the stream
A) Indicates camouflage B) Indicates they are ready to reproduce C) Indicates age D) Indicates sickness
A) A pool with submerged logs B) An undercut bank with roots C) A riffle with cobbles D) A concrete-lined channel
A) Fish are absent B) Fish are present C) Birds are feeding D) Water is polluted
A) Adult fish B) Type of insect C) Baby fish D) Stream algae
A) Optimal spawning grounds B) Reduced oxygen levels C) Fast-flowing currents for feeding D) Refuge from predators and temperature extremes
A) Steep, eroding bank B) Bank with bare soil C) Bank with established vegetation D) Concrete bank
A) Sunlight Levels B) Dissolved Oxygen C) Stream Velocity D) Water Temperature
A) Makes it harder for researchers to study B) Provides cover and feeding opportunities C) Increases pollution D) Reduces stream flow
A) Low oxygen levels B) High fish population C) Good water quality D) Pollution
A) A shallow, fast-flowing area with turbulent water B) A stagnant pool C) A deep, slow-moving area D) A dry streambed
A) Cobble B) Gravel C) Pebbles D) Silt
A) Dry stream banks. B) Algae covered rocks. C) Leaves in the pools D) Freshly disturbed gravel beds.
A) Reduces oxygen levels B) Provides shade and stabilizes banks C) Increases water temperature D) Releases toxins into the stream |