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.
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 fahaka pufferfish, also known as the Nile puffer, globe fish, lineatus puffer, is a tropical freshwater pufferfish found in the upper Nile, Chad, Senegal, Gambia, Geba, Volta and Turkana basins in West, Northeast and East Africa.
Dichotomyctere ocellatus, commonly the figure 8 puffer or eyespot puffer, is a pufferfish found in freshwater in Southeast Asia. It is known from the lower reaches of the Mekong (Cambodia), the Peninsular Malaysia as well as Borneo.
Pao suvattii, or Arrowhead puffer, is a species of pufferfish. It is a medium-sized pufferfish, reaching 11.5 cm (4.5 in) SL. It is also known as a Pignose Puffer or a Mekong Puffer. It is locally common in the Lower Mekong basin, and is exclusively a freshwater fish.
Pao baileyi, the hairy pufferfish, is a species of pufferfish usually found in the rocky habitats, including rapids, of the Mekong mainstream and its larger tropical freshwater tributaries.
Pao barbatus is a species of freshwater pufferfish found in the Mekong River in southeast Asia.
Pao cambodgiensis is a species of freshwater pufferfish native to the Mekong basin. It is also recorded from Dong Nai River. This species grows to a length of 15.3 centimetres (6.0 in) SL.
Pao cochinchinensis is a species of freshwater pufferfish native to the basins of the Mekong and Chao Phraya Rivers. This species grows to a length of 7 centimetres (2.8 in) SL.
Pao leiurus is a species of pufferfish found in Southeast Asia from Thailand to Indonesia and in particular the Mekong basin. It is occasionally imported into the aquarium trade but is reported to be aggressive and snappish.
Pao palembangensis, is a species of freshwater pufferfish native to Thailand, Laos, Malaysia and Indonesia in Southeast Asia. Its commonly called the humpback puffer or dragon puffer. It is bred for aquaria as an ornamental fish because of its beautiful skin colouration and pattern.
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.
The smallscale archerfish is a perciform fish of genus Toxotes. As its name suggests, the scales of the smallscale archerfish are smaller than those of other archerfish. They reach a maximum length of 15 centimetres (5.9 in). Smallscale archerfish live in the tropical Indo-Pacific region and are potamodromous, moving between fresh and brackish water through their lifetimes.
Oryzias mekongensis is a species of fish in the family Adrianichthyidae. It is endemic to the Mekong River Basin in southeast Asia, where found in ditches, canals and ponds.
Pao is a genus of mostly freshwater pufferfish with one species also occurring in brackish water. They are found in Southeast Asia. Until 2013, its species were generally placed in Tetraodon.
Pao turgidus is a species of freshwater pufferfish native to the Mekong basin. It may also occur in the Chao Phraya basin in Thailand. This species grows to a length of 18.5 centimetres (7.3 in) SL.
Datnioides microlepis, also known as the Indonesian tiger perch, Indo datmoid, Indonesian tigerfish, or finescale tigerfish, is a species of freshwater fish endemic to the Malay Peninsula and Indonesia. Previous records from the Chao Phraya and Mekong rivers is due to confusion with the D. pulcher, which was included in D. microlepis until 1998. It reaches up to 45 cm in length. This fish is commonly seen in the aquarium trade, and often is seen when juvenile about 3–4 in (8–10 cm) long.
Crossocheilus reticulatus is a freshwater fish in the family Cyprinidae from Southeast Asia. It grows to 17 cm (6.7 in) standard length.
Parambassis siamensis is a species of freshwater fish in the Asiatic glassfish family Ambassidae. It is native to the mainland Southeast Asia in Thailand, Cambodia, Vietnam, and Laos; records from Singapore and Java (Indonesia) probably are introductions. Its range includes the Mekong, Mae Klong, and Chao Phraya basins. It grows to 7.5 cm (3.0 in) standard length, although typical length is about 4 cm (1.6 in).
Pao palustris is a species of pufferfish in the family Tetraodontidae. It was described in 2013 as Tetraodon palustris by Pasakorn Saenjundaeng, Chavalit Vidthayanon, and Chaiwut Grudpan from the Mekong basin of Thailand. FishBase lists this species as a synonym of Pao brevirostris, although ITIS lists Pao palustris as a valid species.
