How fast does a copra 50 go?

Does hard water with a concentration of iron and magnesium affect the ability of guppies to breed? will carp eat trout? What water do Sole fish live? Why do blue tangs change color? What does the Fathead Minnow eat? What is an ageing tank? Can a great white shark kill an elephant? What type of clothes should people bring to a freshwater biome? What fish eats only fish? What do Fat clawed hermit crabs eat? Do sharks go blind for a moment when biting there prey? Can Cynotilapia cichlid and kribensis cichlids be bread with each other? What water tests do you perform on your new freshwater aquarium? What type of babies do gobies have live or eggs? Can you freeze a previously frozen then cooked salmon? Is trout a mild tasting fish? How do you get marlin if we already have red heart? What are tetra masts? Who are the sailfish enemies? Can you eat nurse sharks?