What is the altitude of freshwater?

Which substance is responsible for the red color in red algae? Why has a pregnant guppy stopped eating? What is the difference between a cuda and a barracuda fish? During what era did marine life become diverse? What color does indigo and salmon make? What fish eats the viper fish? If guppies are pregnant do they breath hard and hide? Where do giant moray eels live? When was Red High Heels created? What is a mischievous goblin called? How do you adjust gap on electric clutch? Will yabbies eat moss off rocks? Why trout turns black when they became ill? Which type of air blower used in aquaculture? Is this a corny way to ask a girl to prom or cute i was going to buy a goldfish or some type of fish and put it in a bowl and have a underwater sign say your the only fish in the sea for me prom? What is the evolutionary history of a jellyfish? Are desmids freshwater marine or both? Do female great whites hunt in packs? What is a fishrat? What does bluefish is best suited for?