Ha ha.
A pond is a pond that someone feels for you in reality, because water represents feeling in dreams. The water is clear. Pay attention to the clarity here. Water is emotion, clarity means high purity, which means that feelings for you are pure and true. I have many dreams, all about clear water, and of course there are turbid water. Turbid water makes feelings unreal.
Crocodiles and fish represent dreams of desire and emotional desire. The crocodile took the nephew away, and the nephew should be the embodiment of your relationship with him. Being taken away by a crocodile may mean that the relationship will leave you, so you will cry in your dream.