''Chiloglanis frodobagginsi'' is a species of

catfish Catfish (or catfishes; order (biology), order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Catfish are common name, named for their prominent barbel (anatomy), barbels, which resemble a cat's whiskers, though not ...

native to

West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...

, in particular the upper

Niger River The Niger River ( ; ) is the main river of West Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in south-eastern Guinea near the Sierra Leone border. It runs in a crescent shape through Mali, Nige ...

. First described in 2023, it was initially mistaken for its

sister species In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ...

, '' Chiloglanis micropogon''.

Etymology

''Chiloglanis frodobagginsi'' was named after

Frodo Baggins Frodo Baggins ( Westron: ''Maura Labingi'') is a fictional character in J. R. R. Tolkien's writings and one of the protagonists in ''The Lord of the Rings''. Frodo is a hobbit of the Shire who inherits the One Ring from his cousin Bilbo Bag ...

, a fictional character that appears in the English novel

J. R. R. Tolkien John Ronald Reuel Tolkien (, 3 January 1892 – 2 September 1973) was an English writer and philologist. He was the author of the high fantasy works ''The Hobbit'' and ''The Lord of the Rings''. From 1925 to 1945, Tolkien was the Rawlinson ...

's fantasy novel ''

The Lord of the Rings ''The Lord of the Rings'' is an Epic (genre), epic high fantasy novel written by English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel to Tolkien's 1937 children's book ''The Hobbit'' but eventually d ...

'' and other related media.

Description

''Chiloglanis frodobagginsi'' is a small species of ''

Chiloglanis ''Chiloglanis'' is a genus of upside-down catfishes native to Africa. These species have modified lips and barbels that form a suckermouth. They also have a naked (scaleless) body. Sexual dimorphism has been reported in ''Chiloglanis''. The adul ...

'' with a maximum

standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

of 38.1 mm. The species exhibits

sexual dimorphism Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ...

, specifically in the

urogenital papilla The genital papilla is an anatomical feature of the external genitalia of some animals. In mammals In mammals, the genital papilla is a part of the vulva not present in humans, which appears as a small, fleshy flab of tissue. The papilla covers the ...

, in which those of males are elongated while female papillae are reduced.

Tubercles In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection, b ...

are present, with higher concentrations near the head. These tubercles are white, while the body is medium-brown with light-brown marks. ''C. frodobagginsi'' possesses very reduced

mandibular In jawed vertebrates, the mandible (from the Latin ''mandibula'', 'for chewing'), lower jaw, or jawbone is a bone that makes up the lowerand typically more mobilecomponent of the mouth (the upper jaw being known as the maxilla). The jawbone i ...

barbels In fish anatomy and turtle anatomy, a barbel is a slender, whisker like sensory organ near the mouth (sometimes called whiskers or tendrils). Fish that have barbels include the catfish, the carp, the goatfish, the hagfish, the sturgeon, the z ...

on its oral disc, making it able to be distinguished from other known species of ''Chiloglanis''. The oral disc is formed by the unification of its upper and lower lips. Unlike its sister species, ''Chiloglanis micropogon, C. frodobagginsi'' has fewer premaxillay teeth, which are located in three rows instead of four.

References

{{Taxonbar, from=Q121212675 Fish described in 2023 frodobagginsi