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> Synbranchiformes (Spiny eels) > Mastacembelidae (Spiny eels)
Etymology: Macrognathus: Greek, makros = great + Greek, gnathos = jaw (Ref. 45335).
More on author: Day.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser benthopelagisch. Tropical

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Asia: India.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 29.9 cm SL Männchen/unbestimmt; (Ref. 97143); common length : 20.0 cm TL Männchen/unbestimmt; (Ref. 4833)

Kurzbeschreibung Morphologie | Morphometrie

Afterflossenweichstrahlen: 62 - 75. Macrognathus guentheri can be distinguished from Macrognathus albus by the following characters: body with distinct bars or marblings (vs. absent in M. albus), head shorter (14.1-6.3 % SL vs. 16.6- 17.4) and less deep (39.5-42.2 % HL vs.43.0- 48.6), body wider (7.0-7.5 % SL vs. 5.7- 7.1), pre dorsal (21.1-24.0 % SL vs. 26.9-28.4) and pre anal (56.0-61.6 % SL vs. 61.5-67.4) distances shorter, eyes are widely set (inter orbital width 10.5- 12.0 % HL vs. 6.3- 6.8), snout shorter (37.2- 41.1 % HL vs. 42.8- 48.4) and anal fin with 62-75 soft rays (vs. 56-62); irregular blotches absent on the mid dorsal side and extending a little to upper lateral side stretching from the opercle to caudal base (vs. present); dorsal spines comparatively longer and prominent (vs. short and partly hidden under skin); spinous part of dorsal fin originating just behind the end of pectoral fin (vs. originating considerably behind the end of pectoral fin); and preorbital spine present (vs. absent) (Ref. 97143).

Found in pools and running waters.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

Talwar, P.K. and A.G. Jhingran, 1991. Inland fishes of India and adjacent countries. Volume 2. A.A. Balkema, Rotterdam, i-xxii + 543-1158, 1 pl. (Ref. 4833)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 23 September 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: weniger kommerziell; Aquarium: Kommerziell

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00282 (0.00130 - 0.00610), b=2.96 (2.78 - 3.14), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (26 of 100).

Preiskategorie (Ref. 80766): Unknown.

Macrognathus guentheri (Day, 1865)