| Helicophagus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Pangasiidae |
| Genus: | Helicophagus Bleeker, 1858 |
| Type species | |
| Helicophagus typus Bleeker, 1858 | |
Helicophagus is a genus of shark catfishes native to Southeast Asia.
There are currently three recognized species in this genus: [1]
H. leptorhynchus is known from the Chao Phraya and Mekong River drainages in Indochina. [2] H. typus inhabits rivers of Sumatra and southeast Borneo. [3] H. waandersii is known from medium- to large-sized rivers of Sumatra and Peninsular Malaysia. [2]
H. leptorhynchus grows to about 47.2 centimetres (18.6 in) SL. [4] H. typus reaches a length of about 37.7 cm (14.8 in) TL. [3] H. waandersii has a maximum recorded length of about 70.0 cm (27.6 in) TL. [5]
The stomachs of the specimens of H. waandersii are more or less filled with mollusks, usually bivalves. [5] H. waandersii enters flooded forests. [5] H. waandersii migrates upstream when water levels begin to rise at the beginning of the flood season and moves downstream as water clears at the end of the flood season. [5]
Unlike H. waandersii, H. leptorhynchus stays in permanent river channels and does not move into flooded forests. However, it also migrates upstream and downstream with changes in the water level. [2] H. leptorhynchus feeds primarily on bivalves. [2]
Pseudoplatystoma is a genus of several South American catfish species of family Pimelodidae. The species are known by a number of different common names. They typically inhabit major rivers where they prefer the main channels and tend to stay at maximum depth, but some species can also be seen in lakes, flooded forests, and other freshwater habitats. They have robust bodies, and are important food fish. Recently, their population size has been on the drastic decline due to a variety of factors including overfishing and habitat destruction due to the construction of hydroelectric dams.
Akysis is the largest genus of catfishes of the family Akysidae.
Kryptopterus is a genus of catfishes belonging to the family Siluridae. They are found in freshwater throughout Southeast Asia. The scientific name comes from Ancient Greek kryptós + ptéryx. It refers to the reduced or even entirely absent dorsal fin of these catfishes.
Chaca is the only genus in the catfish family Chacidae. These fish are commonly known as squarehead catfishes, frogmouth catfishes, or angler catfishes. These unusual fish have a sedentary lifestyle and spend much of their time motionless.
Batasio is a genus of catfish of the family Bagridae. These small fish are found in fast-flowing hillstreams throughout South and mainland Southeast Asia.
Pinirampus pirinampu is a species of catfish of the family Pimelodidae. P. pirinampu is also known as the flatwhiskered catfish.
Bagrichthys is a genus of bagrid catfishes.
Hemibagrus is a genus of catfishes of the family Bagridae.
Hyalobagrus is a genus of bagrid catfishes found in Southeast Asia.
Bagarius is an Asian genus of catfishes of the family Sisoridae. It includes five to six extant species and potentially one extinct fossil species, B. gigas.
Parakysis is a genus of catfishes of the family Akysidae. It includes six species.
Pseudobagarius is a genus of catfishes of the family Akysidae.
Silurichthys is a genus of sheatfishes native to Asia.
Ceratoglanis is a genus of sheatfishes native to Asia.
Belodontichthys is a genus of sheatfishes native to Asia.
Osteochilus is a genus of freshwater ray-finned fish belonging to the family Cyprinidae, the family which includes the carps, barbs, minnows and related fishes. The fishes in this genus are mainly found in Southeast Asia with a few extending into adjacent parts of China.
Akysis recavus is a species of fish in the family Akysidae, the stream catfishes. It is native to Thailand, where it occurs in the Chao Phraya River. It has also been reported from the Mekong basin in Laos.
Hemibagrus divaricatus is a species of bagrid catfish found in the Perak River drainage in the western Peninsula of Malaysia. This species reaches a length of 30.8 cm (12.1 in).
Hemibagrus semotus is a species of bagrid catfish found in the Padas River drainage and the shorter coastal rivers which drain the west face of the Crocker Range in northern Borneo, Sabah, Malaysia. This species reaches a length of 19.9 cm (7.8 in).
Hemibagrus lacustrinus is a species of bagrid catfish found in Sumatra, Indonesia in the Danau Singkarak and upper Ombilin River. This species reaches a length of 22.3 cm (8.8 in).
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