Summary: There 88 known constellations that have been discovered by scientist. Most constellations have been discovered by Greeks mythology or historian. For example, like orion the hunter, leo the lion, and hercules son of god.
This constellation is ruled by neptune and Pisces is a water sign. Also Pisces is a mutable sign. This constellation is more complicated than the two other water sign constellations cancer and scorpio.
I like this picture because it shows the lines that appear inside the crab. The lines that make the crab is six simple stars that look like a "Y". This constellation is between Gemini and Leo.
Many constellations have told stories and tell sailors where to navigate during long ago. Most of the constellation were named by the ancient Greeks. A group of constellation would show up in the night sky during a certain season in the year.