Barred bichir (Polypterus delhezi) fish species and information / pictures of Barred bichir - Polypterus delhezi

Barred bichir (Polypterus delhezi) fish species information

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Scientific Name
Polypterus delhezi

Common Name
Barred bichir

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

Classification

Classified By

Boulenger, 1899

Class

Ray-finned fishes (Actinopterygii)

Order

Bichirs (Polypteriformes)

Family

Bichirs (Polypteridae)

Distribution

Region

Africa

Distribution

Africa: central basin of Congo River.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

26 °C

Water Temperature To

28 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal

Trophic Level

3.19 s.e. 0.25 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

44.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5010 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: subsistence fisheries; aquarium: public aquariums

Vulnerability

Low to moderate vulnerability (33 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)