A Peaceful Pond

Watch my fish looking for food. You can see one who thought it saw a bug try to leap out and catch it.

This is an outdoor pond based in a washtub. It has no mechanical filtration or aeration other than the plant life and natural exchange of gases. However, roughly 20 liters of water are changed daily. Despite this, during certain times of the year the water remains cloudy from what I assume is algae.