| Clarias anfractus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Clariidae |
| Genus: | Clarias |
| Species: | C. anfractus |
| Binomial name | |
| Clarias anfractus H. H. Ng, 1999 | |
  Holotype (Oct. 1996) Paratypes (Jun. 1956) Clarias anfractus (Borneo) | |
Clarias anfractus is a species of clariid catfish from Borneo. It is known from the Segama and Kalabakan drainages in Sabah, Northeastern Borneo.
According to type specimens collected from Sabah, it can be found in slow pools of forested fast-flowing streams with mud and soil substrates containing substantial amounts of leaf debris. The fish were found living in holes in the substrate. [2] It has also supposedly been observed in Long Te Malinau Regency, North Kalimantan. [3]
Collected in 1999, the holotype for this specimen was noted to be 176.4 mm long (17.64 cm) from edge of the skull to caudal fin, with the 5 recorded paratypes ranging from 140.4 to 204.2 mm (14–20.4 cm). The diagnosis of this species includes the following characters: [2]
Other notable traits also include:
Preserved specimens are known to be of gray color, with paler undersides. Dorsal, caudal and anal fins are also of body color, with pelvic and pectoral fins being opaque white to translucent. Big white or yellow spots are also common as so in other Asian forest Clarias species. The specimens were kept in a 10% formalin solution.
The Borneo shark is a species of requiem shark, and part of the family Carcharhinidae. Extremely rare, it is known only from inshore waters around Mukah in northwestern Borneo, though it may once have been more widely distributed. A small, gray shark reaching 65 cm (26 in) in length, this species is the only member of its genus with a row of enlarged pores above the corners of its mouth. It has a slender body with a long, pointed snout and a low second dorsal fin placed posterior to the anal fin origin.
Springer's sawtail catshark is a species of catshark, belonging to the family Scyliorhinidae, found in waters 457–699 m (1,499–2,293 ft) deep off the islands of the Antilles, from Cuba to the Leewards. A small, slim-bodied species reaching a length of 48 cm (19 in), the Springer's sawtail catshark can be identified by its color pattern of horizontal dark stripes in front of the first dorsal fin, and dark dorsal saddles behind. It is additionally characterized by the presence of saw-toothed crests, made of enlarged dermal denticles along both the dorsal and the ventral edges of the caudal fin. The Springer's sawtail catshark is oviparous.
Clarias nigricans is a species of clariid catfish. It is only known from the Mahakam River in eastern Borneo. The eel-like catfish of this region were long assumed to belong to the widespread species Clarias nieuhofii but examination of 6 specimens purchased from a fish market in Samarinda in 1999 and preserved specimens from the same location revealed consistent and distinctive differences indicating a separate species.
Clarias batu is a species of clariid catfish. It is only known from Tioman Island off the eastern coast of Peninsular Malaysia. The eel-like catfish found on this island were originally identified as the widespread species Clarias nieuhofii but comparison of a large series of specimens from Tioman with a series of C. nieuhofii from the mainland revealed consistent and distinctive differences indicating a separate species.
Breitensteinia is a genus of catfishes of the family Akysidae. It includes three species.
Acrochordonichthys is a genus of catfishes of the family Akysidae. It includes ten species.
The yellow shovelnose stingaree is a little-known species of stingray in the family Urolophidae, endemic to the outer continental shelf off Western Australia at a depth of 100–210 m (330–690 ft). Growing to 39 cm (15 in) long, this species has an oval pectoral fin disc with a rather elongated, triangular snout, and a short tail with a caudal fin but no dorsal fin. There are prominent lobes outside of its nostrils, and a skirt-shaped flap of skin with a deeply fringed trailing margin in between. Above, this ray is an almost completely uniform light to dark yellow color, which darkens on the caudal fin. The International Union for Conservation of Nature (IUCN) assesses the yellow shovelnose stingaree as least concern, as there is minimal fishing within its range.
The circular stingaree is an uncommon, little-known species of stingray in the family Urolophidae. Endemic to the coastal waters of southwestern Australia, it prefers a rocky and/or vegetated habitat. Reaching 60 cm (24 in) in length, this species is characterized by an oval pectoral fin disc bearing a striking dorsal pattern of lighter spots and rings, and a central circle of white-margined black spots, on a bluish gray background. Between its nostrils is a skirt-shaped curtain of skin, with the posterior corners drawn out into lobes. Its tail bears a rather large dorsal fin in front of the stinging spine, and ends in a deep, lance-like caudal fin. Negligibly affected by human activity, the circular stingaree has been listed under Least Concern by the International Union for Conservation of Nature (IUCN).
The patchwork stingaree is a little-known species of stingray in the family Urolophidae, with a disjunct distribution off northwestern and northeastern Australia. It usually inhabits the outer continental shelf, at a depth of 60–320 m (200–1,050 ft). This species has a diamond-shaped pectoral fin disc much wider than long, and a short, flattened tail with a prominent dorsal fin and leaf-like caudal fin. There is a skirt-shaped curtain of skin between its nostrils. Its dorsal color pattern resembles a mosaic of dark brown rings with light-colored centers, separated by fine reticulated lines. The International Union for Conservation of Nature (IUCN) has listed the patchwork stingaree under Least Concern, as it is subject to minimal fishing pressure.
Synodontis clarias, known as the red tailed synodontis, or the mandi, is a species of upside-down catfish that occurs widely in the waters of northern Africa. It was first described by Swedish zoologist Carl Linnaeus in 1758 as Silurus clarias. The original specimens were obtained in Egypt, near Cairo. The meaning of the species name clarias is not certain, but may possibly have been used to mean "bright" or "clear".
The roughnose stingray is a little-known species of stingray in the family Dasyatidae, generally found in shallow, estuarine waters associated with mangroves off Borneo, Sumatra, and possibly Java. Growing to 72 cm (28 in) across, this species has a rhomboid pectoral fin disc and a whip-like tail with a ventral fin fold. It is characterized by its pointed snout, which is covered by dermal denticles. Reproduction is aplacental viviparous, with females possibly bearing as few as one pup at a time. The International Union for Conservation of Nature (IUCN) has assessed the roughnose stingray as Endangered; it is threatened by overfishing and the destruction and degradation of its mangrove habitat.
The Philippines angelshark is a species of angelshark, family Squatinidae, known only from a 33 cm (13 in) long immature female caught in the Philippines, where it is the only known representative of its family. It has a flattened body and head with greatly expanded pectoral and pelvic fins, and is greenish above with brown spots. Identifying traits of this species include the spiracles, which are more widely spaced than the eyes and bear papillae on the posterior inner rims, and the relative positions of the two dorsal fins. Additionally, S. caillieti lacks fringes on its barbels, enlarged thorns along the middle of its back, and ocelli ("eyespots") on its fins.
Valenciennea helsdingenii is a species of goby from the Indo-Pacific. It is commonly known as the twostripe goby, black-lined sleeper goby, or railway sleeper goby. It can grow up to a length of 25 cm (9.8 in) and is distinguishable by two prominent orange to black lines running longitudinally through its body.
Clarias kapuasensis is a species of clariid catfish from Borneo. It has been described from the upper part of the River Kapuas
Clarias peudoleiacanthus is a species of clariid catfish from Borneo. It has been described from the southern lower parts of the River Kapuas (Western Kalimantan and coastal areas near the Barito River in southern Kalimantan, Indonesia
Clarias intermedius is a species of clariid catfish from Indonesian Borneo. It has been described from Central Kalimantan, Indonesia, between the Sampit and Barito rivers.
Clarias pseudonieuhofii is a species of clariid catfish from Borneo. It has been currently described from the upper basin of the Kapuas River in West Kalimantan, in a geographic area bordering Sentarum Lake. It has been differed from C. nieuhofii by comparing the holotypes and paratypes from specimens of C. nieuhofii from Sumatra.
Clarias planiceps is a species of clariid catfish from Borneo. It is known from tributaries all over Sarawak, and possibly up to Kapuas Hulu Regency.
Clarias microspilus is a species of clariid catfish from Sumatra. It is known from short coastal rivers that drain the western face of the Leuser Mountain Range, in Aceh Province
Clarias insolitus is a catfish within the genus Clarias, found in the upper drainage of the Barito River, in Kalimantan, Indonesian Borneo.
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