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💧 Freshwater 🌡️ Tropical

Pollimyrus Weyli

Pollimyrus weyli Dierickx, Lunkayilakio, Bills & Vreven, 2024
Max Length
5.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
0–1 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

The holotype was caught in a weed-filled non-flowing stream close to the main channel of the Buzi River, some 154 m a.s.l. The vegetation consisted mostly of a fine leafed Potamogeton (like Potamogeton pusillus) and a few water lilies (Nymphaea). Vegetation cover was close to 100%, where the specimen was caught by raking with a big hard-framed hand-net through the weeds. Water depth was less than 1 m with a mixed substrate of sand and rocks. The paratype, on the other hand, was caught in a lower-altitude tributary, at 138 m a.s.l., with a good flow, and completely covered over by emergent Phragmites; there was no submerged aquatic vegetation. It was collected by electrofishing with a Samus backpack at less than 1 m depth with a substrate of cobbles and banks undercut with a lot of rootstocks .

Scientific Name
Pollimyrus weyli
Authority
Dierickx, Lunkayilakio, Bills & Vreven, 2024
Habitat
Freshwater
Climate
Tropical
Body Shape
Short and / or deep
Max Length
5.5 cm
Depth Range
0–1 m
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 17; Anal soft rays: 21 - 23; Vertebrae: 38 - 39. This species is distinguished by the following characters: upper jaw wide, 22.6%-24.5% HL; caudal peduncle thick, 23.4%-23.8% BD; dorsal, anal and pectoral fins rounded; chin small; body deep, 29.6%-29.9% SL; head wide, 55.2%-58.7% HL; anal fin short, 20.2%-22.5% SL; pectoral fin short, 18.1%-19.6% SL; D 17 .: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Pollimyrus Weyli is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic; depth range 0 - 1 m . Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.2±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.01622 × L2.99 (TL)
Max TL
5.5cm
Dorsal Rays
17
Anal Rays
22
Vertebrae
39

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Dierickx, Lunkayilakio, Bills & Vreven, 2024

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