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 close my eyes and suck you in like a fire.
I grow. I grow. Im fattening out.
Im a kid in a rowboat and youre the sea,
the salt, youre every fish of importance.”
—Anne Sexton (19281974)
“I have often told you that I am that little fish who swims about under a shark and, I believe, lives indelicately on its offal. Anyway, that is the way I am. Life moves over me in a vast black shadow and I swallow whatever it drops with relish, having learned in a very hard school that one cannot be both a parasite and enjoy self-nourishment without moving in worlds too fantastic for even my disordered imagination to people with meaning.”
—Zelda Fitzgerald (19001948)
“Shakespearean fish swam the sea, far away from land;
Romantic fish swam in nets coming to the hand....”
—William Butler Yeats (18651939)