Simply seeing an anaconda in your dream can be indicator of big changes coming in your real life in both professional and the personal arena. Most of these changes will be due to you meeting new people in both areas. These new acquaintances will be quite inspiring for you.
If you dream that anaconda has fallen on you from above it means that someone that is quite close to is not completely honest. Their dishonesty will soon be discovered by you and this might be a reason for a significant conflict with them.
Seeing an anaconda swimming in a body of water signifies that you are in for surprise in regards to a person that you just met. Your intuition about them is likely quite wrong and you will see that for yourself.
Seeing an anaconda resting coiled up means that you quite tired of pressures that you have in your life. This is especially true for your professional life and career and general. If this dream is recurring than it is best for you to simply get away from the pressures by having a vacation for an example.
Hunting an anaconda in your dream is a sign of great and important times being in front of you. You might still not realize that but the next few months will be a time period of great importance for the future.
Being attacked by an anaconda in a dream is sign of you being affected by actions of your enemies in your real life. If you successfully defend yourself from the attack than it means that you will be able to deflect your enemies efforts in real life also.