Can a betta fish have a stroke?

Would all the different kinds of organisms in a pond be considered a population or a community? Can cows drink the water out of ponds in fields? What eats great white sharks? How do you fish mate? Do sharks eat suit of armor? Can the scales of a shark cut human skin? How do you clean high heels? Do the boys or girls give birth to sea horses? Is there great white sharks in america? Are cartilaginous fish vertebrates or invertebrates? Does the pump in the water fountain need to be working all the time to prevent stagnant water? How long can a lungfish live out of water? What type of belts sell most? Is sand sharks real? What is the name of a baby horses? How many teeh do sharks have? What do you call a baby seahorse? Will raison fishes for which country? What does it mean when the betta lets out black ink? When should you water a lawn?