Bluntnosed sawtooth pellonuline (Potamothrissa obtusirostris) fish species and information / pictures of Bluntnosed sawtooth pellonuline - Potamothrissa obtusirostris

Bluntnosed sawtooth pellonuline (Potamothrissa obtusirostris) fish species information

Scientific Name
Potamothrissa obtusirostris

Common Name
Bluntnosed sawtooth pellonuline

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 12-18; Anal spines: 0; Anal soft rays: 16 - 27. Body slender. Pre-pelvic scutes not strongly keeled, beginning under or just behind base of last pectoral fin ray, 7 to 10 + 10 to 12. Snout rounded; lower jaw not projecting, exactly meeting tip of upper when mouth closed, deepest at mid-point, with small saw-like teeth on each side; pre-maxillae with small teeth pointing downward; maxilla very slender; second supra-maxilla very small

Classification

Classified By

Boulenger, 1909

Class

Ray-finned fishes (Actinopterygii)

Order

Herrings (Clupeiformes)

Family

Herrings, shads and sardines (Clupeidae)

Distribution

Region

Africa

Distribution

Africa: Middle and Upper Congo system, i.e. northern and eastern tributaries.

Range

7°N - 8°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; pelagic

Trophic Level

3.2 s.e. 0.40 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

False

Physical Size and Genetics

Maximum Length

6.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.6250 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: subsistence fisheries

Vulnerability

Low vulnerability (10 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

  Harmless

IUCN Red List Status

  Least Concern (LC)