misteri ikan naga (pic)

haniryan

sesuka ati je buang ikan asing kat tasik2 malaysia nih....lama2 pupus la ikan2 tempatan dimakan ikan2 asing nih

tekken

aku penah tgk..kat zoo negara ada ikan nih..
mmg besor giler...

yellowprestige

Misteri ikan naga
Oleh NOOR AZAM AZIZ dan ZAID SALIM



HULU TERENGGANU: Ikan naga? Tidak ramai ...
amazed Post at 28-6-2009 10:40

    Kalau dengar cakap2 orang tempatan area Kenyir and Kuala Berang, ikan naga ni memang wujud la. jadi cerita tu sahih. ade yang menyatakan, pernah ternampak ikan naga, yang mata nya sebesar tiang letrik TNB. Kes yang orang kata ikan naga ni makan orang, dengarnya ikan tu makan mayat anggota bomba tu selepas die lemas. Bukannya anggota bomba tu mati disebabkan dimakan oleh ikan naga. Huhu. Lagi satu, Tasik Kenyir ni sangatlah luas, sape2 yang pernah lalu jalan short cut ke Perak-Simpang Pulai melalui Felda Aring pasti boleh membayangkan keluasan Tasik Kenyir ni. Tak mustahil ikan2 ni boleh membesar dengan jayanya.  Seriau pun ye jugak sebab sunyi tkde banyak sangat kereta lalu. Meriah pun dekat jeti pelancongan je.

alhakim

ikan ni kalau hulur jari terus dia ngap

siape_aku

toman mkn la daging org....nak2 kat tasik biru kat kuang tmpt org main jet ski tu...bukan kat tasik kenyir ni ke org penah nmpk kelah besar lori??? mungkin juga jelmaan kot.....

zad78

sodap buek masak lomak ni......

penampar_jepun

Arapaima Gigas    (The Pirarucu)

Kingdom:        Animalia
Phylum:        Chordata
Class:        Actinopterygii
Order:        Osteoglossiformes
Family: Arapaimatidae
Genus:        Arapaima
Species:        A. gigas
Binomial name: Arapaima gigas
Cuvier (1817) (Schinz, 1822) A. gigas was first named by Georges Cuvier in 1817.

The arapaima, pirarucu, or paiche (Arapaima gigas) is a South American tropical freshwater fish. It is one of the largest freshwater fishes in the world and the second longest fish recorded in South America. Within the Amazon basin, A. gigas is found in several different types of habitat, such as the floodplain lakes of this region, the large tributaries of the Amazon river including the Rio Madera and the Rio Machado, and the varzea or forest. The pirarucu inhabits both white water and clear water. Much of the water that comprises the pirarucu's habitat is also oxygen deficient, as it is located in swampy areas of the rainforest.

FACT: As one of the most sought after food fish species in South America, it is often captured primarily by handheld nets for export, by spearfishing for local consumption, and, consequently, large arapaima of more than 2 m are seldom found in the wild today. Most large Arapaima wild caught in the 20th and 21st Century are approx. 2 m (6.6 ft), in some exceptional cases the largest were  2.5 m (8.2 ft) and with a weight of 200 kg (440 lbs). ACTUAL RECORDS Several Commercial fishing parks in Brazil, Thailand and Malaysia have been established and will possibly provided the record fish sizes forever in the future. There are several countries with established breeding farms as well including Belize, Brazil.............

MYTH: Searching the net or reading older books and magazines you might come upon the often cited maximum length of 4.5 m (14.8 ft) which comes from a single second-hand-report from the first half of the ninteenth century, and is not confirmed. The maximum-cited weight for the species is 200 kg (440 lbs).


Ecology

The diet of the arapaima consists of fish, crustaceans, and other small animals including birds. The fish is an air-breather, using its swim bladder, which is rich in blood vessels and opens into the fish's mouth, an advantage in oxygen-deprived water that is often found in the Amazon River. This fish is therefore able to survive in shallow waters with dissolved oxygen as low as 0.5 ppm. because it is an obligate air breather that needs to surface every 10-20 min.

Reproduction

The female pirarucu is sexually mature at the age of five years old and are typically 160 centimeters in length at this point in their life. Due to the geographic range that arapaima inhabit, the animal's life cycle is greatly affected by the seasonal flooding that occurs. The arapaima lays its eggs during the months of February, March, and April when the water levels are low or beginning to rise. They build a nest approximately 50 cm wide and 15 cm deep, usually in muddy bottomed areas. As the water rises the eggs hatch and the offspring have the flood season to prosper, during the months of May to August. Therefore, the yearly spawning is regulated seasonally. The arapaima male is supposed to be a mouthbrooder, ??????? like its relative the Osteoglossum spp., meaning the young are protected in its mouth until they are older. The female arapaima helps to protect the male and the young by circling them and fending off potential predators. The parental care includes helping to aerate the water for it's offspring, which is a necessity for survival of the offspring in the oxygen-deficient waters of some habitats. Adults have the ability to exude a pheromone from their head to attract offspring which keep the offspring near the parents.

Evolutionary history

Fossils of arapaima or a very similar species have been found in the Miocene Villavieja Formation of Colombia.


Importance to humans

The arapaima is hunted and utilized in many ways by local human populations. Arapaima are harpooned or caught in large nets and the meat is said to be delicious. Since the arapaima needs to swim up to breathe air, traditional arapaima fishers often catch them by first harpooning them and then clubbing them dead. One large individual can yield as much as 70 kg of meat.

The tongue of this fish is thought to have medicinal qualities in South America. It is dried and combined with guarana bark, which is grated and mixed into water. Doses of this are given to kill intestinal worms. In addition, the arapaima's bony tongue is often used to scrape cylinders of dried guarana, an ingredient in some beverages, and the bony scales are used as nail files.

Aquarium Fish: It is also considered an aquarium fish, although it obviously requires a large tank and ample resources. Public Aquariums around the world showcase this magnificent fish. This animal also appears in the pet trade, although to keep an arapaima correctly requires a large tank and can prove quite difficult.

Food Habits

A. gigas is a predator that mainly eats other fish. If a bird or some other animal happens to be present, this large predator will also eat that animal. The pirarucu usually finds food near the top of the water  However, the pirarucu is also capable of diving.


Primary Diet:
carnivore (eats terrestrial vertebrates, piscivore ).

Predation

Known predators
humans (Homo sapiens)
spectacled caimans (Caiman crocodilus)
The pirarucu's sheer size and bony armor provide defenses against predators.

Economic Importance for Humans: Negative

There are no known adverse effects towards Homo sapiens.

Economic Importance for Humans: Positive

A. gigas is hunted and utilized in many ways by local human populations. Pirarucu are harpooned or caught in large nets and the meat is said to be delicious. One individual can yield seventy kilograms of meat. In addition, the pirarucu's bony tongue is often used to scrape cylinders of dried guarana, an ingredient in a beverage, and the bony scales are used as nail files. This animal also appears in the pet trade, although to keep a pirarucu correctly requires a large tank and can prove quite difficult.


Ways that people benefit from these animals:
pet trade ; food .

In 1976, the SUDEPE (Supertendencia do Desenvolvimento da Pesca) outlawed the killing of a pirarucu from October to March, during the low water season when this animal becomes so visible due to it's sheer size. Also the SUDEPE declared that the pirarucu has to be at least one and a half meters in length before it can be killed.



Other Comments

A. gigas was first named by Georges Cuvier in 1817. This animal is often called a living fossil due to it's archaic morphology. This fish has also been extremely successful in the Amazon. However, due to overfishing this animal is in danger of becoming extinct.

http://www.spitfirechallenge.ca/ ... sic%20Gladiator.htm