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💧 Freshwater Critically Endangered 🌡️ Tropical

Nothobranchius Sylvaticus

Nothobranchius sylvaticus Nagy, Bellstedt & Luke, 2025
Max Length
3.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Nothobranchius Sylvaticus (Nothobranchius sylvaticus), first described by Nagy, Bellstedt & Luke, 2025 is a tiny fish in the family Nothobranchiidae (order Cyprinodontiformes). Adults typically reach 3.40 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 Critically Endangered.

Scientific Name
Nothobranchius sylvaticus
Authority
Nagy, Bellstedt & Luke, 2025
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
CR
Max Length
3.4 cm
Trophic Level
3.2
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 14 - 15; Anal soft rays: 13 - 15. This species is distinguished from its congeners by the following set of characters: scales on trunk iridescent light blue covering the entire caudal peduncle; dorsal portion of head grey with distinct red lobes along supraorbital canal; posterior scale margins on postorbital portion of opercle creating two pronounced brown-red oblique bars; dorsal and anal fins golden, marked with dark grey dots and stripes proximally and medially, merging into uniform dark grey zone distally; dark red to red colouration of the proximal side of the caudal fin, plain red medially, and with slender black distal band; and colouration of the brown-red scale margins, a series of morphometric and meristic differences, and in the structure of the cephalic sensory system : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Nothobranchius Sylvaticus is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00603 × L3.13 (TL)
Max TL
3.4cm
Dorsal Rays
15
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2025

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Nagy, Bellstedt & Luke, 2025

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