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> Polypteriformes (Bichirs) > Polypteridae (Bichirs)
Etymology: Polypterus: Greek, poly = a lot of + Greek, pteron = wing, fin (Ref. 45335); palmas: Named after M. Büttikofer, collector of the type-specimens (Ref. 46277).
More on author: Ayres.

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

; acqua dolce demersale; pH range: ? - 7.0; dH range: ? - 10. Tropical; 26°C - 28°C (Ref. 2060); 7°N - 10°S

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

Africa: coastal rivers of the Gulf of Guinea, from Guinea Bissau to Liberia and upper Cavally River in Côte d'Ivoire; also in upper Casamance River in Senegal (Ref. 28149, 81263). Reports from the Congo River basin (Ref. 44840, 51193) and Democratic Republic of the Congo (Ref. 4537) probably refer to Polypterus polli, previously a subspecies of Polypterus palmas, and only known from the Congo River basin (Ref. 28149).

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 35.3 cm SL maschio/sesso non determinato; (Ref. 28149)

Short description Morfologia | Morfometria

Spine dorsali (totale): 7 - 10; Spine anali 12-14; Vertebre: 56 - 59. Diagnosis: Polypterus palmas is distinguished from other species of the genus by the upper jaw longer than lower jaw, pectoral fin not reaching the level of the first dorsal fin ray and 27-32 scales between occiput and first dorsal fin ray (Ref. 2835, 28149, 42908, 81263).

Facultative air-breathing (Ref. 126274)

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

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Hanssens, M.M., G.G. Teugels and D.F.E. Thys Van Den Audenaerde, 1995. Subspecies in the Polypterus palmas complex (Brachiopterygii; Polypteridae) from West and Central Africa. Copeia 1995(3):694-705. (Ref. 28149)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 07 June 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse; Acquario: Commerciale

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00195 - 0.01073), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.9 ±0.43 se; based on food items.

Resilienza (Ref. 120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec=5 observed in Aquatium is probably too low; assuming > 10 fecundity (RF)).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (33 of 100).

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Polypterus palmas Ayres, 1850