Intelligence
Goldfish have a memory-span of at least three months and can distinguish between different shapes, colors and sounds. Goldfish vision is among the most studied of all vision in fishes. By using positive reinforcement, goldfish can be trained to recognize and to react to light signals of different colors or to perform tricks. Fish respond to certain colors most evidently in relation to feeding. Fish learn to anticipate feedings provided they occur at around the same time every day.
Read more about this topic: Goldfish
Famous quotes containing the word intelligence:
“Most women’s intelligence tends more to the improving of their folly than their reason.”
—François, Duc De La Rochefoucauld (1613–1680)
“The intelligence suffers today automatically in consequence of the attack on all authority, advantage, or privilege. These things are not done away with, it is needless to say, but numerous scapegoats are made of the less politically powerful, to satisfy the egalitarian rage awakened.”
—Wyndham Lewis (1882–1957)
“But it is impossible that the creative power should exclude itself. Into every intelligence there is a door which is never closed, through which the creator passes.”
—Ralph Waldo Emerson (1803–1882)