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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); lucius: Name from Latin meaning pike, alluding to the stronger dentition (compared to its congeners), partly predatory behavior and pike-like appearance..

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

; acqua dolce benthopelagico. Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Africa: Kilombero Valley, forming Kibasira Swamp, part of Rufiji River basin, in Tanzania (Ref. 83514, 122074).

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.4 cm SL maschio/sesso non determinato; (Ref. 122074); 5.2 cm SL (female)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0; Raggi dorsali molli (totale): 14-16; Spine anali 0; Raggi anali molli: 16 - 18. Diagnosis: Nothobranchius lucius differs from all other species of the N. melanospilus group, except N. insularis, by having snout pointed in lateral view, jaws moderately long vs. snout blunt to weakly pointed, jaws short; caudal fin, in males, with broad dark grey to black band on the posterior margin vs. narrow; presence, in females, of dark dots over the whole flank vs. dark dots when present restricted to the posterior portion of the flank (Ref. 122074). It is distinguished from N. insularis by having inner premaxillary teeth larger than teeth of the outer premaxillary tooth row vs. smaller; caudal fin rounded in males vs. subtruncate; in females, flank dark dots are rounded and arranged in horizontal rows vs. dots vertically elongated, often arranged in oblique rows; unpaired fins, in females, with dark grey dots extending over most fin vs. dots restricted to the basal portion of unpaired fins; caudal, pectoral and pelvic fins longer, caudal fin length in males 31.3-34.9% of standard length and 30.3-32.9% of standard length in females of N. lucius, vs. 26.9-29.6% of standard length in males and 22.8-27.4% of standard length in females of N. insularis; pectoral-fin length 22.2-24.5% of standard length in males and 20.2-24.6% of standard length in females, vs. 17.1-21.8% of standard length and 14.2-19.3% of standard length, respectively; pelvic-fin length 11.6-13.1% of standard length in males and 11.5-13.0% of standard length in females, vs. 8.6-11.0% of standard length and 9.6-11.0% of standard length, respectively; and two neuromasts in the posterior section of the anterior supraorbital series vs. three (Ref. 122074).

Found in seasonal pools and swamps and has an annual mode of reproduction; observations on captive specimens indicate that it can be predatory to smaller fish, although this behavior is not obligatory (Ref. 83514).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Costa, W.J.E.M., 2017. Redescription of Nothobranchius lucius and description of a new species from Mafia Island, eastern Tanzania (Cyprinodontiformes, Aplocheilidae). Zoosyst. Evol. 93(1):35-44. (Ref. 122074)

IUCN Red List Status (Ref. 130435)

Near Threatened (NT) (B1ab(iii)); Date assessed: 23 December 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca:

FAO - Publication: search | FishSource |

Informazioni ulteriori

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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=0.01096 (0.00449 - 0.02680), b=2.92 (2.71 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Nothobranchius lucius Wildekamp, Shidlovskiy & Watters, 2009