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> Characiformes (Characins) > Alestidae (African tetras)
Etymology: Phenacogrammus: Greek, phenax, -akos = deceptive + Greek, gramma = letter, signal (Ref. 45335); flexus: Flexus, from the Latin, meaning winding, zigzag, or sharp turn; named in reference to the prominent pattern of black pigmentation along the flanks and caudal peduncle (Ref. 127185).

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

; süßwasser benthopelagisch. Tropical

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Africa: Ndzaa River, tributary of Mfimi River, Congo River basin, in Democratic Republic of the Congo (Ref. 127185).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 4.7 cm SL Männchen/unbestimmt; (Ref. 127185)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 9 - 10; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 20 - 21; Wirbelzahl: 31 - 32. Diagnosis: Distinguished from all congeners except Phenacogrammus deheyni and P. concolor by the presence of a prominent anterior expansion of the first pleural rib; it is further distinguished from all congeners in the possession of 6 supraneural bones vs. 7, and a characteristic zigzag pattern of black pigmentation along and below the midline extending from the posterior border of the opercle to the base of the caudal peduncle (Ref. 127185).

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

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Stiassny, M.L.J., E. Alter, R.J.C. Monsembula Iyaba and T.L.D. Liyandja, 2021. Two new Phenacogrammus (Characoidei; Alestidae) from the Ndzaa River (Mfimi-Lukenie basin) of central Africa, Democratic Republic of Congo. Am. Mus. Novit. 3980:1-22. (Ref. 127185)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

Nicht untersucht

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01072 (0.00484 - 0.02371), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±0.3 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

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

Phenacogrammus flexus Stiassny, Alter, Monsembula Iyaba & Liyandja, 2021