My Heavenly Dragon System

Xiao Chen, previously a normal human on earth, yet due to a strange fruit he was sent into the dangerous world of cultivation. But there is a huge twist, he was reincarnated as a small koi fish at the bottom of a huge lake. With the divine system granted to him, watch as he builds himself up from a weak fish into a heaven devouring dragon.. Will he still be cautious? Or will he realease his strength for the world to see.