Threadfin – a valuable fish species

Threadfin (Javanese fish) is a type of fish that primarily live in the shallow waters and are found in many parts of the country have different salinity. The fish are usually 8 inches (20 cm) to 80 inches (200 centimeters) and grayish in color. There are many species of fish they Polynemidae (goatfish) known as threadfin, so we have the variety of color and size. Obvious characteristics of this fish species is its pectoral fins, was divided into two separate parts.

Threadfin is often found in subtropical waters. The ability to survive in the saline water region of the fish species, this means they can also be detected in rivers and lakes. They usually live in the shallow waters there are sand and mud bottoms. They also have the ability to find prey at the bottom of the sand and the mud using the Shaver the chest free of it.

Usually, the silver grey threadfin. The length of the fish varies according to species. For example, species of Threadfin could 340 cm big, although not all fish also grew to that size.

A total of about 40 species of fish known as threadfin. A number of species including species of Threadfin 8 Australia beard and black dot Threadfin Persic. Species of giant African Threadfin, as it proved, is one of the largest Threadfin species, can live in both salt water and fresh water. Species Atlantic Threadfin is much smaller and usually only about 10 inches.

This fish eat the smaller fish. Many species also eat crustaceans. However, there were differences between the species for food. For example, King Threadfin species eat mainly shrimp and other fish.

The difference with the other fish, the pectoral fins of the threadfin are divided into two parts. the pectoral fins are small and located on either side of the fish. The bottom part of the pectoral fins separated out into long thin beams, that is where the fish got its name. The beam may be long enough to exceed the tail of it, and as mentioned, be used to search for food under the sand.
Threadfin is known to form large flocks. This means they are targets of these fishermen caught commercially, because easy to catch in large numbers. The majority of threadfin is used as food for other fish, but some species are used by humans because of the delicious food. This fish is also very famous for the sentence.

– Specialization

The Indian Threadfin

Local name: Threadfin, Leaflet, black Threadfin Fish
The English common name Indian threadfin
Distribution
The world: Madagascar, Indian, Australian…
Vietnam: distribution in South Vietnam
Morphological characteristic streamlined Fuselage, slightly flattening sides. Wide mouth teeth, small muzzles. No upper lip, lower lip very developed. The eyes are very small, length 7 times the diameter of the eye, the eye membrane of fat. The pectoral fins divided into two parts: the upper part consists of the rays divide into branches; the lower part includes 5 free fiber, rays the rays the longest upper thread reached almost to the starting point of the anal fin. Tail fin split into calendered pointed lobes, deep stretches finish into yarn. Small scales. Black pink body with faint banding. All the fins are yellow.
House size: 700-800 mm
Season: year round
Fisheries exploitation tools: mesh bottom pull
Products: fresh, frozen, making the sauce

Fourfinger threadfin

Local name: Threadfin, Chet Fish, Threadfin leaflet.
Common name: Giant Fourfinger threadfin, threadfin, Threadfin
The scientific name Eleutheronema tetradactylus (Shaw, 1804)
Distribution:
World: India, Australian educational institutions, Dried, Ringgit, the Philippines, Thailand, China
Vietnam: the fish in the Gulf of Tonkin, in Central and southern Vietnam.
Morphological characteristics: Is the largest fish species in the species of Threadfin. Fish body slightly longer and flattening sides. Muzzles, very wide mouths, small teeth. Big eye length by 4-4.5 times the diameter of the eye. The pectoral fins divided into two parts, the upper part consists of the rays not branched, filamentous rays is 4 lower part of freedom in which the fibers on the longest, up to the belly fin root. Two forked caudal fin, two equal lobes. Small scales. Grey-blue on the fuselage section; the bottom color cream. The dorsal fin and tail fin is grey. The anal fin and ventral fins are orange-yellow; the fibers of the pectoral fins are white.
House size: 550-700 mm
Season: year round
Fisheries exploitation tools: mesh bottom pull
Products: fresh, frozen, making the sauce

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