Agriculture
Vitamin D-licious Mushrooms
Making the most of a meal
Cleaning Up Fish Farms
Amphibians
Salamanders
Frogs and Toads
Toads
Animals
Return of the Lost Limbs
Life on the Down Low
Cannibal Crickets
Behavior
Flower family knows its roots
Body clocks
Fighting fat with fat
Birds
Ducks
Hummingbirds
Flightless Birds
Chemistry and Materials
Scientist Profile: Wally Gilbert
Makeup Science
Mother-of-Pearl on Ice
Computers
Galaxies on the go
A Light Delay
Seen on the Science Fair Scene
Dinosaurs and Fossils
Fossil Fly from Antarctica
A Rainforest Trapped in Amber
Early Birds Ready to Rumble
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Riding to Earth's Core
Surf Watch
Wave of Destruction
Environment
Acid Snails
Inspired by Nature
Flu river
Finding the Past
Little People Cause Big Surprise
Big Woman of the Distant Past
A Plankhouse Past
Fish
Seahorses
Tuna
Bull Sharks
Food and Nutrition
A Pepper Part that Burns Fat
The mercury in that tuna
Yummy bugs
GSAT English Rules
Adjectives and Adverbs
Finding Subjects and Verbs
Problems with Prepositions
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
42,000 students will sit for the GSAT Exam in two weeks
GSAT Scholarship
GSAT Mathematics
GSAT Practice Papers | GSAT Mathematics | Maths
42,000 students will sit for the GSAT Exam in two weeks
Prime Time for Cicadas
Human Body
Sun Screen
From Stem Cell to Any Cell
Electricity's Spark of Life
Invertebrates
Beetles
Butterflies
Spiders
Mammals
Weasels
Capybaras
Killer Whales
Parents
Expert report highlights the importance to parents of reading to children!
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
Physics
Electric Backpack
Speedy stars
One ring around them all
Plants
Pumping Up Poison Ivy
Bright Blooms That Glow
Fungus Hunt
Reptiles
Chameleons
Iguanas
Tortoises
Space and Astronomy
Gravity Tractor as Asteroid Mover
Holes in Martian moon mystery
A Great Ball of Fire
Technology and Engineering
Machine Copy
Algae Motors
Reach for the Sky
The Parts of Speech
What is a Preposition?
Pronouns
What is a Noun
Transportation
Reach for the Sky
Revving Up Green Machines
Tinkering With the Basic Bike
Weather
A Change in Climate
Watering the Air
The solar system's biggest junkyard
Add your Article

Goldfish

The goldfish was one of the earliest fish to be domesticated, and is still one of the most commonly kept aquarium fish. A relatively small member of the carp family (which also includes the koi carp and the crucian carp), the goldfish is a domesticated version of a dark-gray/olive/brown carp native to east Asia (first domesticated in China) that was introduced to Europe in the late 17th century. It may grow to a maximum length of 23 inches (59 cm) and a maximum weight of 6.6 pounds (3.0 kg), although this is rare; most individual goldfish grow to under half this size. In optimal conditions, goldfish may live more than 20 years (the world record is 49 years); however, most household goldfish will only live six to eight years because owners keep them in tanks under the ideal size of 10 U.S. gallons (37.85 L). During the Tang Dynasty, it was popular for Chinese ponds to have carp. As the result of a genetic mutation one of these carp displayed "gold" (actually yellowish orange) rather than silver coloration. This mutation is associated with a dominant gene which also makes the breeding of this trait rather easy. The gold strain became popular for keeping in containers. Afterwards, the people began to breed the gold variety instead of the silver variety, and began to keep them in small containers to watch. In 1162, the empress ordered the building of a pond to collect the red and gold variety of those carp. By this time, people outside the royal family were forbidden to keep goldfish of the gold (yellow) variety. An order was given to the keepers to kill all fish that were yellow in color because it offended the court, since this itself was the royal color. This probably is the reason of why there are more orange goldfish than yellow goldfish, even though it is genetically easier to breed yellow. Since they were bred in captivity, more mutations occurred, which produced more colors. As a result, fancier varieties of goldfish appeared. According to old books and records, the occurrence of other colors were first recorded in 1276. The first occurrence of fancy tailed goldfish was recorded in the Ming dynasty. In 1502, goldfish were introduced to Japan, where the Ryukin and Tosakin varieties were developed. In 1611, goldfish were introduced to Portugal and from there, they were introduced to other parts of Europe. Goldfish were first introduced to North America in 1874 and quickly became popular in the United States. Goldfish natively live in ponds, and other slow or still moving bodies of water in depths up to 20 m (65 ft). Their native climate is subtropical and they live in freshwater with a 6.08.0 pH, a water hardness of 5.019.0 dGH, and a temperature range of 40 to 106 F (4 to 41 C) although they will not survive long at the higher temperatures. Indeed, they are considered ill-suited even to live in a heated tropical fish tank, as they are used to the greater amount of oxygen in unheated tanks as well as the heat burns them. When found in nature, the goldfish are actually an olive green color, and will return to this color if domesticated and then released. In the wild, the diet consists of crustaceans, insects, and various plant matter. While it is true that goldfish can survive in a fairly wide temperature range, the optimal range for indoor fish is 68 to 75 F (20 to 23 C). Pet goldfish, as with many other fish, will usually eat more food than it needs if given, which can lead to fatal intestinal blockage. They are omnivorous and do best with a wide variety of fresh vegetables and fruit to supplement a flake or pellet diet staple. Sudden changes in water temperature can be fatal to any fish, including the goldfish. When transferring a store-bought goldfish to a pond or a tank, the temperature in the storage container should be equalized by leaving it in the destination container for at least 20 minutes before releasing the goldfish. In addition, some temperature changes might simply be too great for even the hardy goldfish to adjust to. For example, buying a goldfish in a store, where the water might be 70 F (approximately 21 C), and hoping to release it into your garden pond at 40 F (4 C) will probably result in the death of the goldfish, even if you use the slow immersion method just described. A goldfish will need a lot more time, perhaps days or weeks, to adjust to such a different temperature. Because the goldfish likes to eat live plants, keeping it with plants in an aquarium can be quite a problem. Only a few of the aquarium plant species can survive in a tank with goldfishes, for example Cryptocoryne and Anubias species, but they require special attention so that they are not uprooted.

Goldfish
Goldfish








Designed and Powered by HBJamaica.com™