The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth-longest river and the third-longest in Asia with an estimated length of 4,909 km (3,050 mi) and a drainage area of 795,000 km2 (307,000 sq mi), discharging 475 km3 (114 cu mi) of water annually. From its headwaters in the Tibetan Plateau, the river runs through Southwest China, Myanmar, Laos, Thailand, Cambodia, and southern Vietnam. The extreme seasonal variations in flow and the presence of rapids and waterfalls in the Mekong make navigation difficult. Even so, the river is a major trade route between western China and Southeast Asia. The construction of hydroelectric dams along the Mekong in recent decades causes serious problems for the river's ecosystem, including the exacerbation of drought.
The Chao Phraya is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand.
Mukdahan is one of Thailand's seventy-six provinces (changwat) and lies in upper northeastern Thailand, also called Isan. Neighboring provinces are Amnat Charoen, Yasothon, Roi Et, Kalasin, Sakon Nakhon, and Nakhon Phanom. To the east it borders the Mekong River, across which lies Savannakhet province of Laos to which it is joined by the Second Thai–Lao Friendship Bridge.
The ticto barb or twospot barb is a species of subtropical freshwater fish belonging to the family Cyprinidae. It is a native of the upper Mekong, Salwen, Irrawaddy, Meklong and upper Charo Phraya basins in the countries of Nepal, India, Pakistan, Myanmar, Bangladesh, Thailand, and Sri Lanka. It has frequently been confused with the Odessa barb in the aquarium trade, but in that species the male is reddish-orange.
The iridescent shark,iridescent shark catfish is a species of shark catfish native to the rivers of Southeast Asia. Despite its name, it is not a shark. It is found in the Mekong basin as well as the Chao Phraya River, and is heavily cultivated for food there.
The dwarf loach, ladderback loach, pygmy loach, chain loach or chain botia is a freshwater fish belonging to the family Botiidae. Formerly included in the genus Yasuhikotakia, it is frequently seen in the aquarium trade, the product of captive breeding.
The Mekong giant catfish, is a large, threatened species of catfish in the shark catfish family (Pangasiidae), native to the Mekong basin in Southeast Asia and adjacent China. It is considered critically endangered due to overfishing and habitat loss.
The giant freshwater stingray is a species of stingray in the family Dasyatidae. It is found in large rivers and estuaries in Southeast Asia and Borneo, though historically it may have been more widely distributed in South and Southeast Asia. The largest freshwater fish and the largest stingray in the world, this species grows up to 2.2 m (7.2 ft) across and can reach up to 300 kg (660 lb) in weight. It has a relatively thin, oval pectoral fin disc that is widest anteriorly, and a sharply pointed snout with a protruding tip. Its tail is thin and whip-like, and lacks fin folds. This species is uniformly grayish brown above and white below; the underside of the pectoral and pelvic fins bear distinctive wide, dark bands on their posterior margins.
Osphronemus is a genus of large gouramis, the only genus within the subfamily Osphroneminae. These fish are known as the giant gouramis and are native to rivers, lakes, pools, swamps and floodplains in Southeast Asia, with O. exodon from the Mekong basin, O. laticlavius and O. septemfasciatus from Borneo, while O. goramy is relatively widespread. O. goramy has been introduced outside its native range in Asia, Africa and Australia.
The snakeskin gourami is a species of gourami native to Southeast Asia. Prior to the merging of Belontidae to the family Osphronemidae, the snakeskin gourami was regarded as the largest member of its family. It is still the largest species in its genus and subfamily.
Plotosus is a genus of eeltail catfishes native to the Indian Ocean, the western Pacific Ocean and New Guinea.
The Mekong freshwater stingray, Hemitrygon laosensis, is a species of stingray in the family Dasyatidae, restricted to the Mekong and Chao Phraya Rivers in Laos and Thailand; the occurrence in Chao Phraya is considered an introduction. Measuring up to 62 cm (24 in) across, this ray has an oval pectoral fin disc, a tail with both upper and lower fin folds, and a midline row of spine-like dermal denticles. A characteristic feature of this species is its bright orange underside. The Mekong freshwater stingray preys on invertebrates and is aplacental viviparous. It has been assessed as Endangered by the International Union for Conservation of Nature (IUCN), as it is threatened by overfishing and habitat degradation.
Living River Siam is a Thai non-governmental organization (NGO) which analyzes the impact of Thailand's various dam projects and coordinates the research of indigenous peoples to give Thai villagers the power to document the influence of local rivers and dams. Founded in 1999, it gained prominence during the Pak Mun Dam study period in 2001, when it developed a method for instructing villagers on how to document the effects of the dammed river on their lives. When the Thai government proposed other dam sites, Living River Siam took its research methods to the villages surrounding those sites as well. Today, the organization works with other NGOs in Southeast Asia to counter government-sponsored research that encourages dam construction.
The beardless barb is a species of freshwater fish in the family Cyprinidae. It is widespread in Southeast Asia. It grows to 25 cm (9.8 in) total length.
Hypsibarbus vernayi is a species of cyprinid fish in the genus Hypsibarbus. The specific name references Arthur S. Vernay, an English adventurer who collected the type specimen.
The Java barb, more commonly known as silver barb in aquaculture, is a species of ray-finned fish in the genus Barbonymus.
Gyrinocheilus aymonieri is a freshwater fish native to large parts of Southeast Asia. It is of interest as a local food source and for the aquarium trade. Its common names include honey sucker, sucking loach and Chinese algae eater.
Scaphognathops is a genus of cyprinid fishes found in Southeast Asia. Thai vernacular names are pla pak pian, pla pian (ปลาเปี่ยน) or pla ta dam (ปลาตาดำ). It is restricted to Mekong Basin, and not easy to find.
Datnioides undecimradiatus, commonly known as the Mekong tiger perch is a freshwater fish native to the Mekong basin in Indochina. It is considered to be the smallest Datnioides. This species looks similar to D. pulcher but has a smaller body. The scales are white-yellow or green and smaller dark stripes with only 5–6 lines.
The giant gourami is a species of large gourami native to freshwater habitats in Southeast Asia. It has also been introduced elsewhere. The species is commercially important as a food fish and is also farmed. It can be found in the aquarium trade, as well. The species has been used for weed control on highly invasive aquatic plants like Salvinia molesta, as the giant gourami can be a voracious herbivore.
