Fish
Different species required for each of 3 depth-zones. The fish need to be herbivores.
- Surface
- Middle
- Bottom
Read more about this topic: Organisms Used In Water Purification
Famous quotes containing the word fish:
“I have a very great fear of love. It is so personal. Let each bird fly with its own wings, and each fish swim its own course.—Morning brings more than love. And I want to be true to the morning.”
—D.H. (David Herbert)
“Memory is a net; one finds it full of fish when he takes it from the brook; but a dozen miles of water have run through it without sticking.”
—Oliver Wendell Holmes, Sr. (1809–1894)
“Everything seems beautiful because you don’t understand. Those flying fish, they’re not leaping for joy, they’re jumping in terror. Bigger fish want to eat them. That luminous water, it takes its gleam from millions of tiny dead bodies, the glitter of putrescence. There’s no beauty here, only death and decay.”
—Curtis Siodmak (1902–1988)