Aenigmachanna gollum, Gollum snakehead

Aenigmachanna gollum Britz, Anoop, Dahanukar & Raghavan, 2019

Gollum snakehead
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> Anabantiformes (Gouramies, snakeheads) > Aenigmachannidae (Gollum snakehead fishes)
Etymology: Aenigmachanna: Name from Latin word 'aenigma', for enigma, and Channa, the genus name of Asian snakeheadsgollum: Named after the character from J. R. R. Tolkien’s books ‘The Hobbit’ and ‘The Lord of the Rings’. Gollum is a creature that went underground and during its subterranean life changed its morphological features; noun in apposition.
Eponymy: The genus and these species are named after the fictional character, Gollum, in J R R Tolkien’s The Hobbit and Lord of the Rings. [...] (Ref. 128868), visit book page.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

; süßwasser benthopelagisch. Tropical

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Asia: India.

Größe / Gewicht / Alter

Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 12.7 cm SL Männchen/unbestimmt; (Ref. 120659)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

This species is distinguished from species of Channa and Parachanna by the following unique characters among channids: very slender with maximum body depth only 11.1-11.3% SL; eel-like body with head length only 20.8-21.6% SL; a large mouth with jaw length 60.4-61.1 % HL; A 43-44; absence of a body lateral line with pored scales; scales in a lateral series 83-85; colour pattern and absence of buoyancy; differs from other channids by having 64 vertebrae, D 56-57, and absence of pelvic fins (Ref. 120401).
Cross section: circular.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

The fish collected from Malappuram was in a paddy field (Ref. 120401). The fish collected from Peringara was found, at the height of summer, with the water surface in the well was at a depth of about 5 metres below the ground surface; it came to light when the water in the well, normally clear, suddenly turned muddy and the well was drained to facilitate cleaning. Peringara is situated in a large natural wetland that abuts the Kuttanad lowlands, kniwn as ‘the rice bowl’ of Kerala (Ref. 120659).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

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Britz, R., V.K. Anoop, N. Dahanukar and R. Raghavan, 2019. The subterranean Aenigmachanna gollum, a new genus and species of snakehead (Teleostei: Channidae) from Kerala, South India. Zootaxa 4603(2):377-388. (Ref. 120401)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  Verwundbar (VU) (B1ab(ii,iii)+2ab(ii,iii)); Date assessed: 28 February 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Schätzungen auf der Grundlage von Modellen

Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  3.4   ±0.5 se; based on size and trophs of closest relatives
Anfälligkeit der Fischerei (Ref. 59153):  Low vulnerability (10 of 100). 🛈