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Nematogobius maindroni
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Nematogobius maindroni
Picture by
Wirtz, P.
Teleostei (teleosts) >
Gobiiformes
(Gobies) >
Gobiidae
(Gobies) > Gobiinae
Etymology:
Nematogobius:
Greek, nemas, -atos = filament + Latin, gobius = gudgeon (Ref.
45335
)
.
More on author:
Sauvage
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; freshwater; brackish; demersal; amphidromous (Ref.
46888
). Tropical; 20°C - 25°C (Ref.
12468
)
Eastern Atlantic: Senegal to Angola (Ref.
57403
), including the Gulf of Guinea and offshore islands (Ref.
4343
,
79590
). Also reported from the Cunene in Namibia (Ref.
33857
) and Angola (Ref.
120641
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 8.0 cm TL male/unsexed; (Ref.
57403
)
Dorsal
spines
(total): 7;
Dorsal
soft rays
(total): 112;
Anal
spines
: 1;
Anal
soft rays
: 9 - 10. Diagnosis: mental barbels long, nasal barbels shorter; 4-5 rows of teeth in upper jaw, teeth in outer row larger than teeth in inner rows, which are curved posteriorly; 4 rows of slightly recurved teeth in lower jaw, outer row with largest teeth, except for mid-lateral teeth of inner row, which are similar in size to teeth in outer row; operculum, suboperculum and suborbital region scaleless; nape with some (maximum 14) small cycloid predorsal scales in a narrow band, not extending anteriorly beyond level of preoperculum; scales on abdomen smaller than those on flanks; 30-34 (usually 33 or 34) ctenoid scales in a longitudinal series (including 2 scales on caudal fin base), and 10-12 (usually 11) in rearward transverse series; 1st dorsal fin: VI; 2nd dorsal fin: I,11-12; anal fin: I,9-10; pectoral fins: 18-19 (rarely 17); caudal fin with 16-17 segmented rays, 14-15 of which are branched (Ref.
57403
,
79590
). Coloration: Preserved specimens: light brown, with dark spots on flanks forming up to 10 irregular, dark cross bars, darkest at lateral midline; dorsal-fin rays with 3-4 spots, forming irregular longitudinal bands on fins; pectorals with a dark spot at upper part of base, distinct in life but fading after lengthy or poor preservation; caudal fin with spots forming vertical bands (Ref.
57403
,
79590
). In life: bands and spots on fins more distinct; body yellowish ventrally, yellowish brown dorsally; suborbital region with alternating yellow and dark patches (Ref.
57403
,
79590
).
Common in brackish waters of estuaries, but may migrate up rivers into freshwaters, often at considerable distance from the sea (Ref.
57403
,
79590
). Maximum reported standard length 65.1 mm (=78 mm TL)(Ref.
79590
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Harrison, I.J., P.J. Miller and F. Pezold
, 2003. Gobiidae. p. 625-666 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref.
57403
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
12 May 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 19 - 27.9, mean 25.6 °C (based on 330 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00333 - 0.01504), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
Nutrients (Ref.
124155
): Calcium = 441 [232, 1,021] mg/100g; Iron = 1.54 [0.85, 2.96] mg/100g; Protein = 17.4 [15.5, 18.9] %; Omega3 = 0.177 [0.070, 0.377] g/100g; Selenium = 40.4 [19.0, 109.2] μg/100g; VitaminA = 32.3 [10.5, 88.5] μg/100g; Zinc = 2.57 [1.74, 3.76] mg/100g (wet weight);
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