In the Garden of Eden, there are many trees. This tree is the tree full of fish and it represents life, blessings and abundance, and souls. It is the tree of Evangelism. 

“He said to them, ‘Go into all the world and preach the good news to all creation."
Mark 16:15

“Heal the sick, raise the dead, cleanse those who have leprosy, drive out demons. Freely you have received, freely give.”
Matthew 10:8