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💧 Freshwater Data Deficient 🌡️ Tropical

Rhyacoglanis Annulatus

Rhyacoglanis annulatus Shibatta & Vari, 2017
Max Length
4.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

A rheophilic species, prefer rapids and other swift-flowing waters. Possibly rare, known only from two preserved specimens collected in widely separated areas from the southern portions of the Rio Orinoco basin .

Scientific Name
Rhyacoglanis annulatus
Authority
Shibatta & Vari, 2017
Habitat
Freshwater
Climate
Tropical
IUCN Status
DD
Max Length
4.3 cm
Trophic Level
3.3
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Rhyacoglanis
Rhyacoglanis
Species
Rhyacoglanis Annulatus
Rhyacoglanis annulatus

🐟 Physical Description

Vertebrae: 34 - 35. This species can be distinguished from congeners by the presence of caudal-peduncle band with an unpigmented central region (vs. band uniformly dark), and a larger distance between anus and anal-fin origin .Cross section: oval.

🌀 Behaviour

Behavioural data for Rhyacoglanis Annulatus 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. Tropical South America: Venezuela.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.3±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.0055 × L3.11 (TL)
Max TL
4.3cm
Vertebrae
35

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2020

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Shibatta & Vari, 2017

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