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💧 Freshwater Least Concern 🌡️ Tropical

Sharpnosed sawtooth pellonuline

Potamothrissa acutirostris Boulenger, 1899
Max Length
7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Found in rivers and lakes, apparently in both running and still water , but not swimming upriver in the smaller streams . The distribution of this species suggests that it tolerates a wide variety of water conditions .

Scientific Name
Potamothrissa acutirostris
Authority
Boulenger, 1899
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
7 cm
Latitude
5°S – 7°N
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 13 - 14; Anal spines: 0; Anal soft rays: 16 - 20. Diagnosis: Body slender, its depth 19-27% of standard length; pre-pelvic scutes fairly strongly keeled, beginning under or just before pectoral fin base, 11-13 pre-pelvic and 10-12 post-pelvic scutes; snout pointed; lower jaw not projecting, included in upper when mouth closed, deepest at mid-point of jaw, with small saw-like teeth on either side; pre-maxillae with rather peg-like teeth, those near mid-line pointing forward; maxilla very slender, its blade over 3 times as long as deep, upper edge ridged, lower edge without denticulations; posterior supra-maxilla very small, spatulate, its shaft about as long as its blade; lower gillrakers 16-18 . It differs from Potamothrissa obtusirostris and P. whiteheadi in its pointed snout, more gillrakers, 16-18 vs. 14-16 and 14-17 respectively, and first pre-pelvic scute beginning under or just before pectoral fin base . Other pellonulines lack saw-like teeth at the sides of the lower jaw . : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Sharpnosed sawtooth pellonuline is currently being reviewed.

🦐 Diet

Diet information for Sharpnosed sawtooth pellonuline is currently being compiled.

🥚 Reproduction

Reproduction data for Sharpnosed sawtooth pellonuline is currently being compiled.

🌍 Habitat & Distribution

Freshwater; pelagic. Tropical; 7°N - 5°S Central African Republic (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00871 × L3.06 (TL)
Max TL
7cm
Dorsal Rays
14
Anal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
7°N – 5°S
Described By
Boulenger, 1899

🌐 Names & Taxonomy

Language Common Names
🇬🇧English sharpnosed sawtooth pellonuline
🇩🇰Danish Spidsnæset Savtandssild
🇷🇺Russian Острорылая африканская селёдочка

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 53 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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