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💧 Freshwater Near Threatened 🌡️ Tropical

Melanorivulus Wallacei

Melanorivulus wallacei Costa, 2016
Max Length
2.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

This freshwater fish is found in streams, in the southern Rio Amazonas basin. The largest specimens examined are from Brazil .

Scientific Name
Melanorivulus wallacei
Authority
Costa, 2016
Habitat
Freshwater
Climate
Tropical
IUCN Status
NT
Max Length
2.8 cm
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

This is distingiushed by the irregular positioning of red dots on the flank of males, that is about half a pupil in diameter, and has a short pelvic fin, not surpassing urogenital papilla at the posterior. For females, the caudal fin has 5 to 8 dark grey to black bars and a rounded black spot smaller than eye. This species has 33 to 36 longitudinal series scales, 13 to 15 anal-fin rays, 28 to 31 caudal-fin rays.

🌀 Behaviour

Behavioural data for Melanorivulus Wallacei is currently being reviewed.

🦐 Diet

Diet information for Melanorivulus Wallacei is currently being compiled.

🥚 Reproduction

Reproduction data for Melanorivulus Wallacei is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00661 × L3.1 (TL)
Max TL
2.8cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Climate Zone
Tropical
Described By
Costa, 2016

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