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💧 Freshwater Least Concern 🌡️ Tropical

Pollimyrus Petricolus

Pollimyrus petricolus Daget, 1954
Max Length
11 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Pollimyrus Petricolus (Pollimyrus petricolus), first described by Daget, 1954 is a small fish in the family Mormyridae (order Osteoglossiformes). Adults typically reach 11.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Pollimyrus petricolus
Authority
Daget, 1954
Habitat
Freshwater
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
11 cm
Trophic Level
3.2
Resilience
High
Vulnerability
13.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 20 - 23; Anal spines: 0; Anal soft rays: 23 - 26. SL/Depth 3.7-4.8. Head 3.9-4.7 x SL, 3.6-5.2 x bigger than eye diameter. Pectoral fins 1.1-1.4 x head length, posterior end reaching origin of pelvic fins (which is 1.7-2.2 x length if pectorals). Dorsal and anal fin origins at same level. Caudal peduncle height 2.1-3.2 x of its length. Color uniformly dark, almost black (Upper Niger); Middle Niger individuals light colored with small dots of melanophores.: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Pollimyrus Petricolus is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
3.2±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.01622 × L2.99 (TL)
Max TL
11cm
Dorsal Rays
22
Anal Rays
25

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Daget, 1954

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