Betta mahachaiensis | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Anabantiformes |
Family: | Osphronemidae |
Genus: | Betta |
Species: | B. mahachaiensis |
Binomial name | |
Betta mahachaiensis | |
Betta mahachaiensis is a species of bubble-nesting betta native to Thailand, [1] where it occurs naturally near the Gulf of Thailand. It is typically seen in stagnant waters in swamps, pools, and ponds. The species can be found in brackish waters, with salinity levels between 1.1 and 10.6 parts per thousand. Betta mahachaiensis is capable of living in both fresh water and brackish water, a trait unique among fish in the genus Betta . This species grows to a length of 5 to 6 cm (2 to 2.4 inches). It is found in the aquarium trade. [2] [3] [4]
Betta mahachaiensis was discovered in 2012 by a team of biologists led by Dr. Bhinyo Panijpan's Mahidol University research group (with PhD candidate Mr. Chanon Kowasupat. [5] [1] ). It was found in the province of Samut Sakhon in Thailand, and its specific name is a derivation of the Thai name for the sub-district. Male individuals of the species are distinguished from species such as Betta splendens by iridescent green-blue stripes on a brown-black background. [1]
As labyrinth fish, Betta mahachaiensis have a pair of suprabranchial chambers that each house an air-breathing organ known as the labyrinth organ, a complex bony structure lined with thin, highly vascularised respiratory epithelium. The labyrinth organ is a morpho-physiological adaptation that allows labyrinth fish to extract oxygen from air. [2]
Samut Sakhon is one of the central provinces (changwat) of Thailand, located along the coast of the Gulf of Thailand. In 2019, it had a population of 584,703, and an area of 872 km², making it the 33rd most populated province whilst being the 4th smallest. Neighboring provinces are Samut Songkhram, Ratchaburi, Nakhon Pathom, and Bangkok. Samut Sakhon is part of the Bangkok Metropolitan Region.
Gouramis, or gouramies, are a group of freshwater anabantiform fish that comprise the family Osphronemidae. The fish are native to Asia—from the Indian Subcontinent to Southeast Asia and northeasterly towards Korea. The name "gourami", of Indonesian origin, is also used for fish of the families Helostomatidae and Anabantidae.
The Siamese fighting fish, commonly known as the betta, is a freshwater fish native to Southeast Asia, namely Cambodia, Laos, Myanmar, Malaysia, Indonesia, Thailand, and Vietnam. It is one of 76 species of the genus Betta, but the only one eponymously called "betta", owing to its global popularity as a pet; Betta splendens are among the most popular aquarium fish in the world, due to their diverse and colorful morphology and relatively low maintenance.
Bubble nests, also called foam nests, are created by some fish and frog species as floating masses of bubbles blown with an oral secretion, saliva bubbles, and occasionally aquatic plants. Fish that build and guard bubble nests are known as aphrophils. Aphrophils include gouramis and the synbranchid eel Monopterus alba in Asia, Microctenopoma (Anabantidae), Polycentropsis (Nandidae), and Hepsetus odoe in Africa, and callichthyines and the electric eel in South America. Most, if not all, fish that construct floating bubble nests live in tropical, oxygen-depleted standing waters. Osphronemidae, containing the bettas and gouramis, are the most commonly recognized family of bubble nest makers, though some members of that family mouthbrood instead. The nests are constructed as a place for fertilized eggs to be deposited while incubating and guarded by one or both parents until the fry hatch.
The Anabantoidei are a suborder of anabantiform ray-finned freshwater fish distinguished by their possession of a lung-like labyrinth organ, which enables them to breathe air. The fish in the Anabantoidei suborder are known as anabantoids or labyrinth fish, or colloquially as gouramies. Some labyrinth fish are important food fish, and many others, such as the Siamese fighting fish and paradise fish, are popular as aquarium fish.
The moonlight gourami, also known as the moonbeam gourami, is a labyrinth fish of the family Osphronemidae native to Indochina. This peaceful species is a popular aquarium fish.
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.
The spotfin betta or Brunei beauty is a species of labyrinth fish endemic to the island of Borneo. It generally inhabits pools of very slow-moving water along rivers and streams in very shallow waters of 30 cm (12 in) or less. This species grows to a length of 6.7 cm (2.6 in) in the wild, and is occasionally found in the aquarium trade; in captivity this species regularly reaches 4 inches in length.
The Krabi mouth-brooding betta, Betta simplex, is a species of gourami endemic to Krabi Province, Thailand. It inhabits karst springs and wetlands, where it lives amongst vegetation close to the banks. This species can reach a length of 8 cm (3 in). This species can also be found in the aquarium trade and is taken from the wild for this purpose. The International Union for Conservation of Nature has assessed it as being "critically endangered" due to over-exploitation and the degradation of its restricted habitat by pollution and development of the surrounding land for farming.
Taenioides cirratus, known as the Bearded worm goby, is a species of worm goby native to the Indian Ocean and the western Pacific Ocean from islands offshore of eastern Africa to New Caledonia and from Japan to Australia.
Betta smaragdina, commonly known as the emerald green betta, blue betta or Mekong fighting fish is a species of gourami native to Southeast Asia. The species gets its green and blue colors due to refraction and interference of light that results from hexagonal crystals that are less than 0.5 micrometres. It is found in the aquarium trade.
The peaceful betta or crescent betta is a species of gourami native to Southeast Asia.
Betta is a large genus of small, active, often colorful, freshwater ray-finned fishes, in the gourami family (Osphronemidae). The best known Betta species is B. splendens, commonly known as the Siamese fighting fish and often kept as an aquarium pet.
Betta coccina is a species of betta native to Peninsular Malaysia and Sumatra, Indonesia. It grows to a length of 5.6 cm (2.2 in). It can be found in the aquarium trade. Betta coccina, commonly known as the wine red betta or red fighting fish, is a species of freshwater fish in the family Osphronemidae. It is endemic to the peat swamps of Indonesia and Malaysia, where it inhabits acidic, slow-moving waters. The species is known for its striking red coloration and relatively peaceful temperament compared to other Betta species.
The blackchin tilapia, formerly Tilapia melanotheron, T. heudelotii and T. leonensis, is a species of cichlid native to coastal west Africa. It is a paternal mouthbrooder which has been introduced to Asia and North America.
Betta cracens is a species of gourami endemic to the island of Sumatra in Indonesia. It is an inhabitant of freshwater swamp forest. This species grows to a length of 5.7 cm (2.2 in), typically inhabits blackwaters that have very soft and very acidic water and is a bubble nest brooder. The Latin term cracens means "slender" or "elegant" and is so named because of the fish's slender body. It was first described in 1996 by Heok Hui Tan and Peter K. L. Ng in The Raffles Bulletin of Zoology.
Betta pi is a species of gourami belonging to the genus Betta. It is found in the Pru Toe-Daeng peat swamps in Narathiwat Province in Southern Thailand, but its range also extends into northern Peninsular Malaysia, most notably the states of Kelantan and Terengganu. It is primarily found in well-shaded peat forest blackwater swamps and creeks where the pH can be as low as 3.0 or 4.0. It is benthopelagic. It can grow to a maximum length of 9.0 cm (3.5 in). It is a fish of mild importance in the aquarium industry. Its diet consists of aquatic invertebrates in the wild, but will also eat frozen, live and dried foods such as larva of Chironomidae, Daphnia, and brine shrimp in aquariums.
Betta compuncta is a species of ray-finned fish in the family Osphronemidae. It reaches 6.2 cm in standard length.
Betta siamorientalis is a species of gourami. It is a freshwater fish native to Asia, where it occurs in shallow marshes, grass fields, and paddy fields in Thailand and Cambodia. It is typically found in still, vegetated environments at the water's edge and is known to use aquatic plants as shelter for building and guarding bubble nests. It is known to occur alongside the species Anabas testudineus, Lepidocephalichthys hasselti, Macrognathus siamensis, Monopterus albus, Pangio anguillaris, Trichopodus trichopterus, Trichopsis pumila, Trichopsis schalleri, and Trichopsis vittata. The species reaches 3.6 cm in standard length and is known to be a facultative air-breather.
Ban Ko is a tambon (subdistrict) of Mueang Samut Sakhon district, Samut Sakhon province, Thailand.