Astroblepus

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Astroblepus
File:Astroblepus sabalo.jpg
Astroblepus sabalo
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Suborder: Loricarioidei
Family: Astroblepidae
Bleeker, 1862[2]
Genus: Astroblepus
Humboldt, 1805[1]
Type species
Astroblepus grixalvii
Humboldt, 1805[1]
Synonyms[1]

Astroblepus is a genus of freshwater ray-finned fishes belonging to the family Astroblepidae, the climbing catfishes or naked sucker-mouth catfishes. This genus is the only genus in its family.[1] These catfishes are primarily found in torrential streams in the Andean area.[3] Astroblepus pholeter and A. riberae are troglobites adapted to living in subterranean water systems.[4] These species are typically small, less than 10 cm (4 in).[3] The largest species reaches 30 cm (1 ft).[3] These fish have suckermouths like those of loricariids. They have two pairs of barbels, maxillary and nasal. The dorsal fin spine lacks a locking mechanism.[5] These fish also have odontodes, tiny teeth on their skin. All species exhibit a conical, pointy type on their fin rays like that found in other loricarioids; other species also exhibit a blunt type that is only found on their skin.[5]

Some of these fish are able to live in high altitude and climb the faces of waterfalls.[5] Their climbing ability comes from specially developed pelvic fins, as well as their suckermouths.[5] In their Neotropical Andean habitat, dry and wet seasons are quite extreme, and odontodes may help in sensing food, mates and water flow, as well as help cling to surfaces.[5] They feed upon invertebrates, such as caterpillars and annelids.[5]

The Astroblepidae were usually placed within Siluriformes as the sister family of Loricariidae,[6][7] but a recent study found them to be more closely related to the family Scoloplacidae.[8][9]

Species

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Astroblepus contains the following valid species:[10]

References

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