Where Have All the Bees Gone?
Got Milk? How?
Making the most of a meal
Salamanders and Newts
A Seabird's Endless Summer
Thieves of a Feather
Professor Ant
Copycat Monkeys
A Recipe for Happiness
Storing Memories before Bedtime
Tropical Birds
Chemistry and Materials
Makeup Science
Music of the Future
Scientist Profile: Wally Gilbert
It's a Small E-mail World After All
Galaxies far, far, far away
Hubble trouble doubled
Dinosaurs and Fossils
A Rainforest Trapped in Amber
Dinosaur Eggs-citement
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Rocking the House
Distant Quake Changes Geyser Eruptions
Ice Age Melting and Rising Seas
To Catch a Dragonfly
Seabirds Deliver Arctic Pollutants
Power of the Wind
Finding the Past
Stonehenge Settlement
Preserving Ancient Warrior Paint
Of Lice and Old Clothes
Electric Catfish
Manta Rays
Food and Nutrition
Food for Life
A Taste for Cheese
Packing Fat
GSAT English Rules
Who vs. Whom
Problems with Prepositions
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
Ministry of Education Announces 82 GSAT Scholarships for 2010
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
GSAT Scholarship
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
How a Venus Flytrap Snaps Shut
Secrets of an Ancient Computer
Human Body
Foul Play?
Surviving Olympic Heat
A Long Trek to Asia
Sea Urchin
African Wild Dog
Persian Cats
How children learn
Children and Media
Raise a Lifelong Reader by Reading Aloud
Thinner Air, Less Splatter
Invisibility Ring
The Particle Zoo
Surprise Visitor
Fungus Hunt
Hungry bug seeks hot meal
Black Mamba
Space and Astronomy
Cousin Earth
An Icy Blob of Fluff
Wrong-way planets do gymnastics
Technology and Engineering
Sugar Power for Cell Phones
Searching for Alien Life
Smart Windows
The Parts of Speech
What is a Noun
Adjectives and Adverbs
Reach for the Sky
Ready, unplug, drive
Revving Up Green Machines
In Antarctica watch the heat (and your step)
Arctic Melt
A Change in Climate
Add your Article


Perch are a group of freshwater fish belonging to the family Percidae. Perch have "rough" or ctenoid scales. When looking through a microscope, the scales look like plates with growth rings and spikes on their top edges. The external appearance of the perch is simple enough. The dorsal side of the fish consists of an upper maxilla and lower mandible for the mouth, a pair of nostrils, and two lidless eyes. On the posterior sides are the operculum, which are used to protect the gills. Also there is the lateral line system, which is sensitive to vibrations in the water. Perch have a pair of pectoral and pelvic fins. On the anterior end of the fish, there are two dorsal fins. The first one is spiny and the second is soft. There is also an anal fin, which is also considered spiny, and a caudal fin. Also there is a cloacal opening right behind the anal fin. All perciform fish share the perch's general morphology. Most authorities recognize three species of perch: The European perch (Perca fluviatilis) is found in Europe and Asia. It is usually dark green with red fins. The European perch has been successfully introduced in New Zealand and Australia where it is known as the redfin perch or English perch. The Balkhash perch (Perca schrenkii) is found in Kazakhstan, (in Lake Balkhash and Lake Alakol), Uzbekistan, and China. It is very similar to the European perch, and grows to a comparable size. The Yellow perch (Perca flavescens), smaller and paler than the European perch, is found in the United States and Canada.


Designed and Powered by™