Agriculture
Chicken Eggs as Drug Factories
New Gene Fights Potato Blight
Making the most of a meal
Amphibians
Salamanders
Frogs and Toads
Poison Dart Frogs
Animals
Monkeys Count
Hot Pepper, Hot Spider
A Fallout Feast for Crabs
Behavior
Mind-reading Machine
Monkeys in the Mirror
The chemistry of sleeplessness
Birds
Condors
Mockingbirds
Geese
Chemistry and Materials
The Buzz about Caffeine
The science of disappearing
The hottest soup in New York
Computers
Batteries built by Viruses
The Earth-bound asteroid scientists saw coming
Computers with Attitude
Dinosaurs and Fossils
A Big, Weird Dino
Mini T. rex
Digging for Ancient DNA
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Weird, new ant
Sky Dust Keeps Falling on Your Head
Wave of Destruction
Environment
Whale Watch
Snow Traps
Pollution Detective
Finding the Past
The Taming of the Cat
Stone Tablet May Solve Maya Mystery
Ancient Art on the Rocks
Fish
Sharks
Catfish
Puffer Fish
Food and Nutrition
How Super Are Superfruits?
Strong Bones for Life
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Adjectives and Adverbs
Problems with Prepositions
Order of Adjectives
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
42,000 students will sit for the GSAT Exam in two weeks
The Annual GSAT Scholarships
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
GSAT Exam Preparation
GSAT Mathematics
GSAT Practice Papers | GSAT Mathematics | Maths
Deep-space dancers
Secrets of an Ancient Computer
Human Body
A Long Haul
Hey batter, wake up!
From Stem Cell to Any Cell
Invertebrates
Giant Squid
Sea Urchin
Flies
Mammals
Canines
Rhinoceros
Sperm Whale
Parents
Children and Media
How children learn
What Not to Say to Emerging Readers
Physics
Black Hole Journey
The Mirror Universe of Antimatter
Echoes of a Stretched Egg
Plants
Springing forward
Bright Blooms That Glow
Farms sprout in cities
Reptiles
Garter Snakes
Caimans
Black Mamba
Space and Astronomy
A Darker, Warmer Red Planet
No Fat Stars
Ringing Saturn
Technology and Engineering
Musclebots Take Some Steps
Crime Lab
Drawing Energy out of Wastewater
The Parts of Speech
Countable and Uncountable Nouns
What is a Verb?
Pronouns
Transportation
Robots on the Road, Again
Charged cars that would charge
Revving Up Green Machines
Weather
Warmest Year on Record
Weekend Weather Really Is Different
Polar Ice Feels the Heat
Add your Article

Piranha

The piranhas or piraņas are a group of carnivorous freshwater fish living in South American rivers. They belong to five genera of the subfamily of Serrasalminae (which also includes closely related herbivorous fish including pacus and silver dollars). They are normally about 15 to 25 cm long (6 to 10 inches), although reportedly individuals have been found up to 40 cm in length. They are known for their sharp teeth (able to bite through a steel fishing hook) and an aggressive appetite for meat and flesh. They are normally only found in the Amazonian, Guianas and Paraguayan river systems. However, piranha (most likely former aquarium-dwellers) are also occasionally found in the Potomac River, but they typically do not survive the cold winters of that region Recent research on Serrasalmus aff. brandtii and Pygocentrus nattereri in Viana Lake, which is formed during the wet season when the Rio Pindare (a left bank tributary of the Rio Mearim) floods, has shown that these species eat vegetable matter at some stages in their life history. They are not strictly carnivorous fishes. Piranhas generally pose little threat to humans, and attacks on humans are extremely rare. Natives frequently swim in piranha infested water without attacks or scratches. However, it is not recommended to swim where piranha live in drought season because of increased aggressiveness caused by food scarcity and increased tendency to form large schools. Piranha fish also have the same sensory system that enables sharks to detect blood in minuscule amounts, so it is believed that swimming with an open cut may enhance the chance of an attack.

Piranha
Piranha








Designed and Powered by HBJamaica.com™