Species of pisces

The giant gourami ( Osphronemus goramy ) is a species of large gourami native to freshwater habitats in Southeast Asia. It has besides been introduced elsewhere. The species is commercially significant as a food fish and is besides farmed. [ 2 ] It can be found in the aquarium trade, adenine well. [ 3 ] The species has been used for weed control on highly incursive aquatic plants like Salvinia molesta, as the giant gourami can be a rapacious herbivore. [ 4 ] [ 5 ] It is able of breathing damp air, indeed can survive out of water for long periods. It is much larger than most gouramis ( only the other Osphronemus species reach a similar size ), growing to a maximum standard length of 70 curium ( 28 in ), though most are only around 45 curium ( 18 in ). [ 3 ]

distribution and habitat [edit ]

The giant gourami is native to rivers, streams, marshes, swamps and lakes in Southeast Asia, from the lower Mekong of Cambodia and Vietnam, and Chao Phraya and Mae Klong of Thailand, a well as river basins in the Malay Peninsula, Sarawak of Malaysia, and Java, to Sumatra and Western Kalimantan of Indonesia. [ 1 ] [ 3 ] however, the demand limits of the natural crop are often labelled with uncertainty due to confusion with the early Osphronemus species ( which alone were scientifically described in 1992 and 1994 ) and the far-flung free of elephantine gouramis outside their native crop. [ 6 ] [ 7 ] For example, both the giant gourami and elephant ear gourami have been reported from the middle Mekong, and both the colossus gourami and O. septemfasciatus have been reported from Borneo in the Kapuas River and river basins in Sarawak. however, in-between Mekong records of the giant gourami are likely misidentifications of elephant auricle gouramis ( the only set in the Mekong washbasin where the colossus gourami likely occurs naturally are in the southernmost function, like tributaries originating in the northern Cardamom Mountains ). [ 8 ] The presence of giant gouramis in Borneo is possibly the consequence of introductions. [ 7 ] The final species in the genus, the colossus bolshevik fag end gourami, is restricted to Sabah where the others do not occur. This suggests that the different Osphronemus species primitively had allo- or parapatric distributions. [ 6 ] [ 7 ] Whether consider or by accident, giant gouramis have been introduced widely as food fish. In Asia, this has expanded their range to include an area from southern China to India and Sri Lanka, and in other continents they are now found in Australia, Mauritius, Réunion, Madagascar and elsewhere. [ 9 ] Translocations within Southeast Asia probable started in ancient times. even Europeans recognized its value as a food pisces respective hundred years ago. For case, Georges Cuvier ( 1769–1832 ) suggested that it should be introduced to the french colonies. [ 9 ]

In aquaria [edit ]

tank specifications [edit ]

The giant gourami is besides popular in aquarium. Tanks normally have colored bottoms, with dumbly planted edges, and board forget in the center of the tank for them to swim. They prefer the caller of other fish of exchangeable sizes and temperament. They are slowly to keep at three months erstwhile at around 7.5 curium or 3 in long. At this old age, they have a pronounce peck. They can grow quickly given sufficient food and space to move. even under less than ideal conditions, gourami can grow from 7.5 curium to 50 cm in four years. At this age, in addition to the round face, a ripen giant gourami will have begun to develop the sleep together fair above its eyes. taiwanese and Malaysians admired pisces with protruding heads, known as ‘kaloi ‘ or ‘warships ‘, found in the western separate of the nation. The slightly protruding brow and long stern of these fish were prized in taiwanese society as bringing luck in geomancy. A gourami in a community tank car will snap and charge any other pisces which are small enough for it to bully. Like most aquarium dwellers, giant gourami can be promptly raised with larger, more passive voice fish. however, if other fish are added to a tank, either large or little, they might be killed within a short period .

diet [edit ]

Gourami tend towards herbivory, preferring algae-based foods, but will eat meaty foods. An algae-based flake food, along with freeze-dried bloodworms, tubifex, and seawater runt, provides these fish with the proper nutrition while young. Once of significant size, they can be fed legume, partially or amply cooked fibrous or starchy vegetables, or fruits.

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Breeding [edit ]

The elephantine gourami is an egg layer and builds a nest from plant fibers. Both male and female gourami participates at build nests, though the male appears to play a more big function. [ 10 ] The male and female are distinguished by the dorsal fins and body color. The abaxial flipper on the male ends in a point, and the body is benighted changing to closely blacken during spawning. After building nest the eggs will be laid before next 24 hours. When breeding, the water in the tank should be decreased to about 20 curium ( 8 in ) deep and the temperature should be 28 °C ( 82 °F ). After spawning, the female should be removed to a disjoined tank car as the male will jealously guard the eggs, in a captive environment, sometimes becoming aggressive towards the female. The testis hatch in 24 hours. They must be kept in a dark aquarium .

As food [edit ]

partially in consequence of its size, the elephantine gourami is a significant food pisces, and in its native regions it has been harvested as a accustomed food informant. [ 11 ] In Southeast asian cuisine, gourami is highly valued as food due to its thick flesh, pleasant texture american samoa well as its tasty season. Unlike cavil and milkfish, gouramis do not have fine bones within their human body, which render them easy to consume, thus elevate its economic value. In southeast asian market, gourami is one of the most highly-valued fresh water food fish. Gourami human body is rich in protein and minerals. [ 12 ] It is a popular food pisces in Indonesian, Malaysian and Thai cuisines. Gouramis are peculiarly democratic in sundanese cuisine of Indonesia, [ 13 ] where they often being fried as ikan goreng, grilled as ikan bakar or cook with spice inside a banana leaf wrap as pepes. In some parts of Southeast Asia, they are salted to preserve and prolong ledge life .

References [edit ]