Polypterus delhezi  Boulenger, 1899

Barred bichir
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Polypterus delhezi
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Polypteriformes (Bichirs) > Polypteridae (Bichirs)
Etymology: Polypterus: Greek, poly = a lot of + Greek, pteron = wing, fin (Ref. 45335);  delhezi: Named after M. Delhez, collector of the first specimen of Polypterus delhezi (Ref. 1877).   More on author: Boulenger.

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

Freshwater; demersal.   Tropical; 26°C - 28°C (Ref. 2060)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: middle Congo River basin (Ref. 3188) in Democratic Republic of the Congo and Republic of Congo. Reports from the Shari (Chad basin)(Ref. 1878, 3047, 3049) unconfirmed in Ref. 81263.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 44.0 cm TL male/unsexed; (Ref. 42908)

Short description Morphology | Morphometrics

Dorsal spines (total): 10 - 13; Anal spines: 0; Anal soft rays: 11 - 14. Subcylindrical body (Ref. 42908). Upper and lower jaws reaching to the same level, or the lower jaw is a little shorter (Ref. 42873, Ref. 42901, Ref. 42908). Number of dorsal finlets: 10-13 (Ref. 42908, Ref. 51884). Pectoral fin not reaching dorsal fin origin (Ref. 41588). Ganoid scales (Ref. 42908): 52-58 lateral line scales, 36-40 scales around body, 12-17 predorsal scales (Ref. 41588, Ref. 42848, Ref. 42908, Ref. 51884). Dorsal side gray-olive colored, with 7 to 8 black transversal bars; ventral side yellowish, lighter on ventral side of head (Ref. 41580; Ref. 44841). Spots are forming a black line between the lips and suboperculum (Ref. 41580). Fins yellow with brown or black spots (Ref. 41580).

Biology     Glossary (e.g. epibenthic)

This carnivorous fish lives in streams, lakes and zones of flood (Ref. 41580). Reproduction and spawning occurs during the rainy season (Ref. 41580).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Reproduction occurs during the rainy season (Ref. 41580).

Main reference Upload your references | References | Coordinator | Collaborators

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries; aquarium: public aquariums
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00204 - 0.01123), 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):  3.2   ±0.25 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Fec=2,350).
Vulnerability (Ref. 59153):  Low vulnerability (23 of 100) .
Price category (Ref. 80766):   Unknown.