Jumat, 2007 Agustus 31

Classy Arowanas

Arowanas included in primitive fish group. Various fish fossil found in various place and anticipated to old age among 10 - 60 million years

(depend on species and its place). They have during more than 10 million year so that this fish we can say represent long lived and shatterproof fish. ace of good ace of this period life longtime a has also health and body resistant. Arowanas classified in fish set of relatives " karuhun", that is Osteoglasidae or fish set of relatives in classified arwana " karuhun" family fish, Or family fish Osteoglasidae " bony-tongue" , because part of its mouth base in the form of functioning bone as tooth lot a has mouth its of bottom the coz of of teeth

Arwana has various epithet like: Dragon Fish, Barramundi, Saratoga, Pla Tapad, Kelesa, Siluk, Fairyland, Peyang

Tangkelese, Aruwana, or Arowana, depended from its place. As ancient fish, Arowanas have unique and beautiful appearance and form Its body length, slim, and " Streamline", while its swim movement very classy


In nature, arwana has vary colors from green, silver, and red. Two visible feeler comes out of its lower lip. This feeler has a function as vibration censor to know position prey on the surface of water. Hobbyist included this feeler assessment criterion beauty of pertinent fish.


Arwana represent king sized fish and sometime have the character of aggressively so that everybody not interest to look after Arowanas. Of the size which is big, needed larger aquarium size measure than standard aquarium size measure. Potentially Arowanas have high growth rate, especially if given food which have high protein.

In aquarium arwana can grow till about 60 cm , while in nature it can reach 90 cm, even more certain type can reach 270 cm ( South America Arowanas). Arowanas represent upper swimmer fish, its mouth show this matter

In their nature usually swim at elbow surface, and hunt its prey in the form of insects, small birds, lizards or frogs that might have fallen or jumped into the water from a tree limb.

Therefore feeding of arwana not such a difficult matter during us knows that they “surface eater". Generally Arowanas non including elector in the case of food. They earn to accept all food type for carnivorous fish, but oftentimes they become taking a fancy to one food type, and refuse other type. Arowanas represent of jumper fish, in nature they can catch insect perching at stick Above 1-2 meter of water level. Therefore require to be paid attention to cover the top of your aquarium if wishing looking after this fish in aquarium. Arowanas hold up to attack various disease hold up to attack various disease. However sensitive them to change of water quality, especially to make-up of rate ammoniac, nitrate and nitrite.

The Chinese believe that they are reincarnations of the mythical Dragon and symbolize luck, wealth, prosperity and strength. Businessmen prefer to keep the gold variety in the office for prosperity and the red variety is said to be good for warding off evil spirits in the home. “Dragon Fish” is an apt name for the fish that can reach a size of 3 feet! When taken good care of, they can live up to 25 years old.

Asian Arowanas come in many exotic hues from red to gold to purple to green to silver, but the most sought after is the Super Red variety. The reddest of the Super Red are the Chili Red and Blood Red varieties and can only be found in the tea-colored waters of Kapuas River and Sentarum Lakes (Danau Sentarum) in West Kalimantan. In Japan, the Super Red Arowana can fetch prices ranging between $2,000-$200,000. Due to its popularity, demand and outrageous price tag, the Super Red Arowana has been fished almost to extinction in West Kalimantan and it is extremely rare to catch one in the wild.

Asian Arowanas are now protected under Appendix I of the Convention on International Trade in Endangered Species of wild flora and fauna (CITES), so all commercially traded fish are bred in CITES registered farms and are electronically tagged with coded microchips when the fries reach a size of about 6 inches. CITES violators in the US could face up to $20,000 in fine and up to five years imprisonment.


Minggu, 2007 Agustus 19

Amazing Hawk The Javan Hawk-eagle


Original Name :

Spizaetus nipalensis bartelsi Stresemann, 1924

Subspecies in Indonesia :

None

English Name :

Javan Hawk-eagle

Indonesian Name :

Elang Jawa


DESCRIPTION
Medium sized eagle (adults 60-70 cm) Sexes similar but female ON AVERAGE larger in size. Adult: Dark-brown upperparts, head chestnut-brown, nape yellow-brown. Dark brown to black feathered crown with thin buf margins, prominent white-tipped black crest. Tail dark brown with four black bands, terminating in a thin white band. Underparts whitish to pale rusty-white, white throat emphasized by dark brown to black moustachial and mesial stripes. Breast marked with bold blackish drops and traces of rufous bars, belly and legs barred dark brown. Tail buffy grey with four grey brown bands and a white margin. Tarsus white-feathered with feathers covering the base of the feet. Iris yellow, dark grey to black bill with grey cere, feet yellow. Juvenile/Sub-adult: Upperparts lighter than in adult. The crest, coloured as in adult, shorter but visible. Underparts, head and crown cinnamon-brown, breast and underwings gradually turning white when tail bands and body stripes have fully developed. Lacks the moustachial, mesial and underpart marking and (except for the terminal) tails-bands which gradually develop the following years. Striping appears first near the legs and flanka. Iris bluish-grey gradually turning yellow in second-year birds.


DESCRIPTION

INTERNATIONAL STATUS :
CITES - Appendix II
IUCN – Endangered

INDONESIAN STATUS :
Protected by Indonesian Law as Accipiteridae
* SK Mentan No. 421/Kpts/Um/8/1970
* UU No. 5 tahun 1990
* SK Menteri Kehutanan No.301/Kpts-II/1991
* Keppres No. 4 tahun 1993
* PP No. 7 tahun 1999

PRIME HABITAT :
Lowland and montane tropical rainforest REMARKS Endemic. Since declared as Indonesia’s national bird, the demand of the bird as a status symbol has been subsequently increased in the last decade.
Scientific Classification
Kingdom : Animalia
Phylum : Chordata
Class : Aves
Order : Falconiformes
Family : Accipitridae
Genus : Spizaetus
Species : S. bartelsi Binomial Name : Spizaetus bartelsi Stresemann, 1924


DIAGNOSIS
Typical hawk-eagle with prominent crest.
Distinguished from adult crested subspecies of Javan Crested Hawk-eagle Pernis ptilorhyncus ptilorhyncus by larger size (60-70 cm versus 50 cm) and the much more prominent crest of S.bartelsi , and the characteristic long narrow head of P. ptilorhyncus. Juvenile plumages of S. bartelsi and P. ptilorhyncus show a confusing resemblance but the latter differs by its short unfeathered tarsus, and long narrow head with weak bill and yellow cere. Other possibly confusing eagles are Changeable Hawk-eagle Spizaetus cirrhatus (larger, just vestigial crest), Rufous-bellied Hawk-eagle Hieraaetus kienerii (smaller, shorter crest, whiter below, dark mask), Aviceda jerdoni (smaller, whiter underparts, bare legs),Wallace’s Hawk-eagle Spizaetus nanus (smaller, tail with three black bands), Sulawesi Hawk-eagle Spizaetus lancoelatus (crestless), Booted Eagle Hieraaetus pennatus (smaller, crestless), See also the description of these species in this guide