How much space do angelfish need to live?

What are the dimensions of a 45 gallon hexagon aquarium? Why is it that people cannot breathe under water but a fish can? Are hammerhead sharks rare? What lights are used when trawling at night? How do sharks react to rare metals? What does Cartilaginous fish conduct? Why are koi carp so important to the Japanese Culture? What is the order of stingrays? Who do eels harm? I have a fish pond. Sometimes when it is plugged in and you stick your hand in there you feel a little shock. What causes this? What is the Ph of hydrated lime? What are the oxygen for midnight zone? What is the best way to get seashells to stop smelling like fish? Who is the creator of the FISH philosophy? What ever happened to body by fisher? What fresh water mullusk produce red or pink-colored pearls? What zone do manta rays live in? What is the average size of a baby Greenland shark? Can freshwater reach a temp of 225 degrees Fahrenheit? Can you use dissolved rock salt in your salt water aquarium?