| Bostrychus expatria | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Gobiiformes |
| Family: | Butidae |
| Genus: | Bostrychus |
| Species: | B. expatria |
| Binomial name | |
| Bostrychus expatria (Herre, 1927) | |
| Synonyms | |
| |
Bostrychus expatria is a species of freshwater fish in the family Butidae endemic to Lake Manguao on the island of Palawan in the Philippines. [2]
Bostrychus expatria is a small fish reaching a length of 14.4 centimetres (5.7 in). They appear as standard members of their family, with non-hydrodynamically-shaped bodies typical of bottom-dwelling fish. It possesses two completely separate dorsal fins, the first one supported by spines. The caudal fin is truncately-shaped, usually not much thicker than the peduncle itself. Its eyes are located dorsally, another trait commonly seen in benthic fish. [3]
Bostrychus expatria has a single known population that can be found only in Lake Manguao in the Philippines. Lake Manguao is a freshwater lake located in the hilly areas in the northern part of the Philippine island of Palawan. The lake has at least four brooks draining into it, yet it has no rivers draining out from it. O. expatriata shares the lake with at least two other endemic species of fish from the family Cyprinidae. [4]
Owing to the remoteness of its habitat, there have been extremely few studies on this species. The few ones that have been done describe the fish as a benthic species, spending much of its time resting on the lake's bottom. Despite its size, B. expatriata is predatory, known to feed mostly on the small crustaceans that make the lake's muddy bottom their home. It has also been known to ingest small fishes. [2]
As a small freshwater fish in an island with rich marine resources, B. expatria has no known commercial value. The fish may be caught as bycatch by small cast nets as fishing in the lake is done by the local population. It is known as bulokot by the natives living around the lake. [2]
In 1996, the World Conservation Monitoring Centre assessed the fauna of Lake Manguao and B. expatria (as Boroda expatria) was classified as VULNERABLE. As B. expatria has one known population in a single freshwater lake, its fate is inextricably tied to its home lake's. The fish population is extremely vulnerable to anthropogenic disturbance such as pollution and overfishing, and a slight disturbance to the balance of the lake could send the species to extinction. [1] In theory, the entire island of Palawan has been declared a wildlife preserve which should ensure the survival of the species, but wildlife laws are rarely enforced or followed in the country. [5]
Tilapia, a fish known for disrupting and destroying the natural balance of the ecosystems it invades, was introduced into the lake in 1992. The presence of this voracious species may drive B. expatria into extinction. [4]
The species name, expatria was originally chosen by Herre to describe the fish as an expatriate. [3]
Bostrychus expatria was originally described by Herre as Boroda expatria. Boroda was derived from the Visayan word borod, which was used by the natives of the lake to refer to goby-like fishes. [6] The name remained until 1997 when it was redesignated into the genus Bostrychus (as Bostrychus expatria) by Eschmeyer. [7]
Lake Lanao is a large ancient lake in the Philippines, located in Lanao del Sur province in the country's southern island of Mindanao. With a surface area of 340 km2 (130 sq mi), it is the largest lake in Mindanao, and the second largest lake in the Philippines and counted as one of the 15 ancient lakes in the world. Scholars have been pushing for the lake's inclusion in the UNESCO World Heritage List.
The Arctic lamprey, also known as the Japanese river lamprey or Japanese lampern, is a species of lamprey, a jawless fish in the order Petromyzontiformes. It inhabits coastal freshwater habitat types in the Arctic. Some populations are anadromous, spending part of their lives in the ocean. It is the most common and widespread lamprey in the Arctic region.
The slimy sculpin is a freshwater species of fish belonging to the family Cottidae, which is the largest sculpin family. They usually inhabit cold rocky streams or lakes across North America, ranging from the Great Lakes, southeast Minnesota, northeast Iowa, southwest Wisconsin and northeast Canada. Slimy sculpins have also been found roaming the cold streams of eastern Siberia. They are commonly confused with their closely related relatives, Mottled sculpin, and with tubenose gobies who are both freshwater fishes as well. The slimy sculpin is a nocturnal fish that usually spends most of its time on the stream bottom and seeks shelter under rocks and logs, especially during spawning season. When it swims, it sometimes appears to be "hopping" along the bottom because of its inefficient ability to swim. This is partly due to the absence of a swim bladder, which normally gives buoyancy to a fish.
Eucyclogobius newberryi, the Northern tidewater goby, is a species of goby native to lagoons of streams, marshes, and creeks along the coast of California, United States. The Northern tidewater goby is one of six native goby species to California.
Exyrias is a genus of gobies mostly native to marine waters of the Indian Ocean and the western Pacific Ocean with one freshwater species (E. volcanus) known from the Philippines.
Barbodes is a genus of small to medium-sized cyprinid fish native to tropical Asia. The majority of the species are from Southeast Asia. Many species are threatened and some from the Philippines are already extinct. A survey carried out in 1992 only found three of the endemic Barbodes species, and only two were found in 2008. Several members of this genus were formerly included in Puntius.
The zig-zag eel, also known as the tire-track eel, tire-track spiny eel or marbled spiny eel, is a species of ray-finned, spiny eels belonging to the genus Mastacembelus of the family Mastacembelidae, and is native to the riverine fauna of India, Bangladesh, Pakistan, Sri Lanka, Thailand, Vietnam, Indonesia and other parts of South East Asia. The species was described as Macrognathus armatus by Lacepède in 1800. Other common names for this popular aquarium species are leopard spiny eel and white-spotted spiny eel. This species is not only a popular aquarium fish but also as a food fish in its country of origin.
The dwarf pygmy goby or Philippine goby is a tropical species of fish in the subfamily Gobionellinae from brackish water and mangrove areas in Southeast Asia. It is one of the smallest fish species in the world. Males reach maturity at a standard length of 0.9 cm (0.35 in) and can reach up to 1.1 cm (0.43 in) in standard length, while the females can grow up to 1.5 centimetres (0.59 in) in total length. Adults weigh around 4 milligrams (0.00015 oz). It is known as bia and tabios in the Philippines.
Redigobius is a genus of fish in the goby family, Gobiidae, known commonly as dualspot gobies. They are native to the western Indo-Pacific region, where they occur in estuaries and freshwater habitats just above the tidal influence.
Sicyopterus stimpsoni, commonly known as the Nopoli rockclimbing goby, oopu nopili, or Stimpson's goby, is a species of amphidromous goby endemic to Hawaii. This species can reach a length of 19.8 centimetres (7.8 in) SL.
The channel darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to North America where it typically occurs in the sandy or gravelly shallows of lakes and in small and medium-sized rivers in riffles over sand, gravel or rock bottoms. It is a small fish ranging from 34 to 72 mm in length, olive brown with darker speckles and sometimes with a dark spot below the eye and dark blotches along the flank. It feeds mostly on insect larvae and other small invertebrates and breeds in small streams. This species is listed as threatened by the Canadian Species at Risk Act (SARA) but overall it has a wide range and numerous sub-populations and the International Union for Conservation of Nature has rated it as a "least concern species".
Neovespicula depressifrons is a species of waspfish found in coastal habitats of the Indo-West Pacific region.
The western tubenose goby is a species of goby native to fresh waters of the Black Sea and Aegean Sea basins,. It has recently spread as an invasive species to Central and Western Europe and to North America. Previously Proterorhinus semilunaris was considered as a junior synonym of Proterorhinus marmoratus, but was confirmed as a distinct species based on molecular analysis.
Pterygoplichthys multiradiatus is one of several tropical fish commonly known as Orinoco sailfin catfish, plecostomus. It belongs to the armored catfish family (Loricariidae). Named for its sail-like dorsal fin, the part of its scientific name multiradiatus means "many-rayed" and refers to the rays of the dorsal fin. P. multiradiatus is one of a number of species commonly referred to as the common pleco by aquarists.
The gulf darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is found in Louisiana, Mississippi, Alabama, Florida, Tennessee, and Kentucky. It is a colorful fish, males having vertical barring of red-orange and blue-green near the tail, growing to a length of about 7.8 centimeters (3.1 in). It is typically found in small and medium-sized creeks, often in very shallow water. It occurs over sandy bottoms and among aquatic vegetation such as Sparganium americanum, foraging among the plants and organic debris for insect larvae and small invertebrates. The International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
Rhinogobius carpenteri is a freshwater species of goby endemic to the Philippines. It grows up to 5.9 cm (2.3 in) SL, and is dull yellow-brown, whitish under the jaw, eyes blue, grayish fins with two silvery white anterior spines, silvery white anal fin rays, with the caudal fins shading to dusky at the tip. Its common name in the Philippines is kuchu. The species was named for the co-collector of the cotypes, Mr. W. D. Carpenter. In 1927, Albert William Christian Theodore Herre erected a new genus in the family Gobiidae, Tukugobius and moved R. carpenteri into it as the type species, but the genus was later rendered invalid.
Sardinella tawilis is a freshwater sardine found exclusively in the Philippines. It is the only member of the genus Sardinella known to exist entirely in fresh water. Locally, they are known in Filipino as tawilis.
Gobionotothen is a genus of marine ray-finned fishes belonging to the family Nototheniidae, the notothens or cod icefishes. They are native to the Southern Ocean.
Butidae is a family of sleeper gobies in the order Gobiiformes. The family was formerly classified as a subfamily of the Eleotridae but the 5th Edition of Fishes of the World classifies it as a family in its own right. Molecular phylogenetic analyses have demonstrated that the Butidae are a sister clade to the clade containing the families Gobiidae and Gobionellidae and that the Eleotridae is a sister to both of these clades. This means that the Eloetridae as formerly classified was paraphyletic and that its subfamilies should be raised to the status of families.
Asterropteryx semipunctata, the starry goby is a species of true goby from the family Gobiidae. It is a widespread species, found from the Red Sea and Persian Gulf to Hawaii and the Line Islands, north to Japan and south to Lord Howe Island, as well as Western Australia and New South Wales. It is found on reef rocks covered in algae and among the rubble of the inner flats and turbid lagoons. It uses burrows and holes in the reef to hide in and it feeds on small benthic invertebrates. This species is found either living a solitary life but has also been recorded in small groupss or in small groups. It is the type species of the genus Asterropteryx.
