How do goldfish protect itself properly?

What are some tertiary consumers in the pacific ocean? What do sawtooth sharks eat? What would a 42 inch dorado fish weigh? Does extra oxygen effect fish growth? Is milkfish lives in freshwater? Are there any small non-aggressive fish that may be kept in a tank with your Betta? Do slugs have ears? Do you Chinese? Can you see a shark in the water? What is the definition of pescatarianism? Are clownfish habitats changing? How can a seahorse be allergic to water? Are Tortise a warm blooded or cold blooded? Does a seahorse have a tail? Is aquariam sand suitable for hermit crabs? What does the saying mean to fish or cut bait? Does algae in a fish pond contribute to the amount of oxygen in the water for the fish to breath? What are mermaids predators? What does the young Great White Sharks feed on when it reaches 1000 lbs? Can you put a beta in a 1 gallon tank without a filter?