Actually, most if not all fish (and some reptiles, and birds) can detect changes leading up to an earthquake, or other natural disasters. Some animals can detect it a day or so ahead of time, others perhaps hours or minutes. ;)
And Snowysurface, you are right, it is showing how "useful" seemingly "useless" tanks can become ;)
Breed for the breed, not for the money; the words any REAL breeder would understand.
You must know nothing in order to know all, for all is nothing and nothing is for all.