The Cambodian logsucker (''Ceratogarra cambodgiensis''), also known as stonelapping minnow or false Siamese algae eater, is a species of

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

in the genus ''

Garra ''Garra'' is a genus of fish in the family (biology), family Cyprinidae. These fish are one example of the "log suckers", Suckermouth, sucker-mouthed Barb (fish), barbs and other cyprinids commonly kept in Aquarium, aquaria to keep down algae. T ...

''. It lives in Southeast Asia.

Description

The Cambodian logsucker has a broad midlateral stripe which has a width roughly equal to two scale rows, it has two black bands on the

dorsal fin A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found ...

while the

caudal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only ...

may be plain or have dark margins. They are

sexually dimorphic Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ...

with the females having fuller, rounder bellies than the males, the males develop a red inside of the mouth during the spawning season and both sexes develop

tubercles In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection, b ...

on the head and snout when breeding, although these are more obvious in the males. They grow to

standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

Distribution

The Cambodian logsucker lives in the

Mekong The Mekong or Mekong River ( , ) is a transboundary 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 and a drainage area of , discharging of wat ...

of Laos, Cambodia and Thailand, as well as in the

Mae Klong The Mae Klong (, , ), sometimes spelled Meklong, is a river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, o ...

Chao Phraya The Chao Phraya River 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. Etymology Written evidence of the river being referred to by the ...

and the river systems of south eastern Thailand in

Phrae Phrae (; ; ) is a town ('' thesaban mueang'') and capital of Phrae Province and Mueang Phrae district. It is located in Northern Thailand on the east bank of the Yom river, 555 km north of Bangkok by road. The town occupies ''tambon'' Nai ...

Phitsanulok Phitsanulok (, ) is a city municipality in northern Thailand and the capital of Phitsanulok province. It had a city population of 60,827 and an urban population of approximately 200,000 in 2024, making it Thailand's 19th-most populous city p ...

Ubon Ratchathani Ubon Ratchathani (, ) is one of the four main cities in Thailand's Isan region, alongside Nakhon Ratchasima (Khorat), Udon Thani, and Khon Kaen, collectively known as the "big four of Isan." Located on the Mun River in the southeastern Isan, ...

, Trang,

Chanthaburi Chanthaburi (, ) is a town ('' thesaban mueang'') in the east of Thailand, on the banks of the Chanthaburi River. It is the capital of the Chanthaburi Province and the Mueang Chanthaburi District. The town covers the two ''tambons'' Talat an ...

Chiang Mai Chiang Mai, sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand, the capital of Chiang Mai province and the List of municipalities in Thailand#Largest cities by urban population, second largest city in Thailan ...

Nakhon Si Thammarat Nakhon Si Thammarat (, ; from ) is a city municipality (''thesaban nakhon'') located in Mueang Nakhon Si Thammarat, the capital of Nakhon Si Thammarat Province. Nakhon Si Thammarat Province is situated in the South of Thailand. It is about s ...

Kanchanaburi Kanchanaburi (, ) is a town municipality ('' thesaban mueang'') in Kanchanaburi Province, Thailand. The town of lies to the southeast of Erawan National Park within Kanchanaburi Province, approximately 120km west of Bangkok. In 2006 it had a po ...

Nakhon Sawan Nakhon Sawan (, ) is a city (''thesaban nakhon'') in Thailand. The name literally means "Heavenly City". The city is the capital of Nakhon Sawan province, and covers the complete subdistrict (''tambon'') of Pak Nam Pho and parts of Khwae Yai, Nak ...

, Yala,

Chiang Rai Chiang Rai (, ; , ) is the northernmost major city in Thailand, with a population of about 200,000 people. It is located in Mueang Chiang Rai District, Chiang Rai Province. Chiang Rai was established as a capital city in the reign of King Ma ...

and

Surat Thani Surat Thani (, ) is a city in Amphoe Mueang Surat Thani, Surat Thani Province, southern Thailand. It lies south of Bangkok. It is the capital of Surat Thani Province. The city has a population of 132,040 (2019), and an area of . The city's ...

provinces of Thailand, in Peninsular Malaysia and in southeastern Mymanmar.

Habits and ecology

The Cambodian logsucker lives in rapidly flowing, small to medium sized streams with rocky beds. In submontane to hill regions, it may also occur in larger or lowland rivers. At the start of the

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in Atmosphere of Earth, atmospheric circulation and precipitation associated with annu ...

, it moves into floodplains or paddy fields where it breeds. The fry are cared for by the parents until they are juveniles, at which point they return to the streams. It feeds on

periphyton Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs ( German "surface growth" or "overgrowth", ) refers to the ...

phytoplankton Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater Aquatic ecosystem, ecosystems. The name comes from the Greek language, Greek words (), meaning 'plant', and (), mea ...

and some insects. It is sociable in the wild, forming hierarchies in loose shoals. To settle disputes, the males charge each other, flare their fins, become paler in colour and extend their rostral processes.

Human use

The Cambodian logsucker is eaten by some local humans, especially when spawning. It is common in the aquarium trade, but must be hormonally induced to breed in captivity.

References

{{Taxonbar, from=Q3234848 Cambodian logsucker Fish of Thailand Fish described in 1883 Taxa named by Gilbert Tirant