So here you have two definitions of a blue moon but the one for a calendar blue moon does not describe the true meaning of a blue moon. Here's why:
Sun in Sagittarius. With the transition of the Sun into the next sign of Sagittarius we will move into a more extroverted and expanding flow of energy with many ideas and inspirations.
The fact is, the moon really does have a direct impact on the number of fish you catch and the size of those fish. The reason is that the gravitational pull of the moon on the earth affects the places and the timing of fish feeding patterns, and in fact almost every animal that is not a primate. Fish are particularly susceptible to the gravitational effects of the moon because of the differing heights of the tides. When you think about, the moon has a direct effect on the entire environment in which fish live!