''Ceratoglanis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of sheatfishes native to

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

Species

There are currently two recognized species in this genus: * '' Ceratoglanis pachynema'' Ng, 1999 (Club-barbel sheatfish) * ''

Ceratoglanis scleronema ''Ceratoglanis'' is a genus of sheatfishes native to Asia. Species There are currently two recognized species in this genus: * '' Ceratoglanis pachynema'' Ng, 1999 (Club-barbel sheatfish) * '' Ceratoglanis scleronema'' (Bleeker, 1862) Distri ...

'' (

Bleeker Bleeker is a Dutch occupational surname. Bleeker is an old spelling of ''(linnen)bleker'' ("linen bleacher").Chao Phraya The Chao Phraya ( or ; th, แม่น้ำเจ้าพระยา, , or ) 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. Et ...

and

Mekong River 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. Its estimated length is , and it drains an area of , discharging of water annuall ...

basins. ''C. scleronemus'' occurs in the

Pahang River The Pahang River ( ms, Sungai Pahang) is a river that flows through the state of Pahang, Malaysia. At 459 km in length, it is the longest river on the Malay Peninsula. The river begins at the confluence of Jelai and Tembeling rivers on t ...

basin of peninsular

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

, the Baram, Barito, Kapuas, and

Rejang River The Rajang River ( ms, Batang Rajang) is a river in Sarawak, northwest Borneo, Malaysia. The river originates in the Iran Mountains, flows through Kapit, and then towards the South China Sea. At approximately , the river is the seventh-longest i ...

basins of

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ...

Citarum River The Citarum River ( su, Walungan Citarum) is the longest and largest river in West Java, Indonesia. It is the third longest river in Java, after Bengawan Solo and Brantas. It plays an important role in the life of the people of West Java. It has ...

basin of

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

, and the Batang Hari and

Siak River The Siak (Sungai Siak) is a river of Riau province, in the east of Sumatra, Indonesia, about 1000 km northwest of the capital Jakarta. Approximately 370 kilometres in length, the Siak is a blackwater river which owes its brown color to diss ...

basins of

Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...

. ''C. pachynemus'' grows to 28.0 centimetres (11.0 in) SL. It inhabits mainstream rivers. It is

carnivorous A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...

, feeding on

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

s and

benthic fauna Benthos (), also known as benthon, is the community (ecology), community of organisms that live on, in, or near the bottom of a seabed, sea, river, lake, or stream, also known as the benthic zone.

. ''C. scleronemus'' grows to 44.0 cm (17.3 in) SL. In the

Kapuas Lakes Kapuas may refer to: * Kapuas River * Kapuas Hulu, in West Borneo * Kapuas Regency Kapuas Regency ( id, Kabupaten Kapuas) is one of the thirteen regencies which divide Central Kalimantan Province, on the island of Kalimantan, Indonesia. It forme ...

area in

Kalimantan Barat West Kalimantan ( id, Kalimantan Barat) is a province of Indonesia. It is one of five Indonesian provinces comprising Kalimantan, the Indonesian part of the island of Borneo. Its capital city is Pontianak. The province has an area of 147,307&nb ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

, fishermen reported that this species inhabits rivers and major streams with moderate to fast current. It appears to be

predator Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...

y in nature, feeding on aquatic

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

s and fish.

References

Siluridae Fish of Indonesia Fish of Malaysia Freshwater fish genera Catfish genera Taxa named by George S. Myers {{catfish-stub