Top predatory aquarium fish


The fascinating Piranhas grab our attention with their ferocious nature and lend a thrill to fiction with fantasized "Piranha attacks"!

The Piranha is one of the most efficient predators on the face of the earth. Granted it is not a large animal, with most only reaching about 5 1/2 to 10 inches (14 – 26 cm), but it is known world wide for its ferocious nature. They have razor sharp teeth and are opportunistic carnivores.

A frenzied attack by a group of Piranha will set the water churning. They will attack and eat all sorts of aquatic animals, insects, lizards and amphibians. They will also devour rodents, carrion (dead meat), and sickly or weakened land animals that venture into the water.

The teeth of the Piranha are triangular in shape with an exact fit in their jaw, comparable to a bear-trap. They are designed to puncture and slice the flesh from their prey. They can strip their prey to the bone in a matter of minutes.

These fish are a great source of fascination. Their natural behaviors have become fodder for the scripts of moviemakers looking for a sensational twist to excite and entice an audience. What could be more intriguing than creating a 'fear factor' from the behaviors of these provocative fish found in the "wild". Yet just like the Great White Shark and the Anaconda constrictor, also popular subjects of thriller movies, the Piranha’s behaviors are over-fantasized.

The Piranha does engage in a feeding frenzy that will "make the water boil" if only because a hungry school of fish are trying to reach the same limited food source. All that activity is bound to create water turbulence. A Piranha school generally only consists of about 20 or so fish, but in a feeding frenzy it can reach up to several hundred..

Warm water ocean fish becoming toxic

2010-04-13 09:09:57 by generalhospital

Fish Tale
NY Times By LISA SANDERS, M.D. Published: April 5, 2010
“…Ciguatera poisoning comes from eating fish that has been contaminated with a toxin produced by an organism that grows on reef algae in some infested tropical waters. Because the toxin is stored in fat, it’s concentration increases as it moves up the food chain from the little fish who eat the tainted algae to the larger, predatory fish, like shark, snapper, grouper and barracuda, and from there to the human consumer. Unlike most other causes of food poisoning, this toxin is colorless and odorless and isn’t destroyed by cooking

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