| Parakysis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Akysidae |
| Subfamily: | Parakysinae |
| Genus: | Parakysis Herre, 1940 |
| Type species | |
| Parakysis verrucosa Herre, 1940 | |
Parakysis is a genus of catfishes (order Siluriformes) of the family Akysidae. It includes six species. [1]
Parakysis species are found in small forest streams of Sundaic Southeast Asia. [2] P. anomalopteryx originates from the Kapuas River basin in western Borneo. P. grandis inhabits the Kapuas and Kuching River basins in Borneo and Deli, Indragiri, and Batang Hari basins in Sumatra. P. longirostris is distributed in Singapore, peninsular Malaysia, and the Riau Archipelago. P. verrucosus is known from Peninsular Malaysia and the Riau Archipelago. [3] The discovery of P. notialis in 2003 expanded the known range of Parakysis species to the Barito River basin in southern Borneo. [2]
They are cryptically colored fishes that have a highly rugose skin with tubercles all over the body, branched mandibular barbels, a long, low adipose ridge, and a forked caudal fin. [2] Parakysis species characteristically have pigmented tubercles and lateral lobes of the lower lip. They are also distinguished from Akysis by well-developed barbels, absence of teeth on the palatine, non-serrated pectoral and dorsal spines, and the apparent absent of the lateral line. [4] They range in size from 2.0–6.2 centimetres (.8–2.4 in) SL. [5] [6] [7] [8] [9]
P. anomalopteryx is found in small forest streams. [5] P. longirostris is nocturnal and occurs in clumps of vegetation in streams with flowing waters. It is sympatric with P. verrucosus. [7] P. verrucosus is found in primary peat streams with dense litter falls. [9]
The stream catfishes comprise the family Akysidae of catfishes.
Akysis is the largest genus of catfishes of the family Akysidae.
Akysis longifilis is a species of catfish belonging to the family Akysidae, the stream catfishes. It is only known to inhabit the Sittang River basin in southern Myanmar.
Pseudobagarius meridionalis is a species of catfish belonging to the family Akysidae. It is only known from the Barito River basin in southern Borneo.
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.
Gogangra is a genus of sisorid catfishes native to Asia.
Breitensteinia is a genus of catfishes of the family Akysidae. It includes three species.
Pseudobagarius is a genus of catfishes of the family Akysidae.
Akysis pulvinatus is a species of stream catfish. It is only known from the western half of the Kra Isthmus in southern Thailand.
Ceratoglanis is a genus of sheatfishes native to Asia.
Belodontichthys is a genus of sheatfishes native to Asia.
Acrochordonichthys chamaeleon is a species of catfish of the family Akysidae.
Acrochordonichthys strigosus is a species of catfish of the family Akysidae. It is a freshwater fish only known from the Kapuas River drainage in Kalimantan, in the Indonesian part of Borneo. It grows to 8.4 cm (3.3 in) standard length. A detailed discussion of this species's relationship with the other members of its genus can be found on Acrochordonichthys.
Parakysis longirostris is a species of catfish of the family Akysidae. It goes under common names longnose little warty catfish and Singapore little warty catfish. It is found in the south end of the Malay Peninsula and Bintan Island, Indonesia. A detailed discussion of this species's relationship with the other member of its genus can be found at Parakysis.
Nanobagrus armatus is a species of bagrid catfish found in the Mahakam and Kapuas River basins of Borneo.
Akysis bilustris is a species of catfish belonging to the family Akysidae, known only from two geographically proximate localities in the Xe Kong drainage, a major subdrainage of the Mekong River, in Laos and Cambodia. This species grows to a length of 2.57 centimetres (1.01 in) SL.
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.
Akysis vespa is a species of fish in the family Akysidae, the stream catfishes. It is endemic to Burma, where it occurs in the Ataran River drainage. This species was described to science in 2004.
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).