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💧 Freshwater Least Concern 🌡️ Tropical

Rhyacoglanis Paranensis

Rhyacoglanis paranensis Shibatta & Vari, 2017
Max Length
8.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Rhyacoglanis Paranensis (Rhyacoglanis paranensis) is a ray-finned fish. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 8.9 cm. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Rhyacoglanis paranensis
Authority
Shibatta & Vari, 2017
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
8.9 cm
Trophic Level
3.5
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Rhyacoglanis
Rhyacoglanis
Species
Rhyacoglanis Paranensis
Rhyacoglanis paranensis

🐟 Physical Description

Dorsal soft rays (total): 6; Anal soft rays: 5 - 7; Vertebrae: 31 - 33. This species can be distinguished from R. annulatus by the following set of characters: by having a uniformaly dark caudal peduncle band; wide subdorsal band; fewer number of total vertebrate; greater distance between the pelvic-fin and anus; and, shorter distance between the anus and anal fin. It further differs from R. epiblepsis by the pointed caudal-fin lobes (vs. rounded lobes) and few dark body spots present (vs. many body spots of less intense pigmentation). Additionally, it differs from R. seminiger by having distinctly separated subdorsal and subadipose bands (vs. fused bands), continuity between dark pigmentation on the caudal-fin lobes (vs. separation of the pigmentation on those lobes) and discrete, dark transverse pectoral and pelvic-fin stripes present (vs. fins largely uniformly dark). It can be differentiated from R. pulcher by lacking dorsal and ventral confluence between the dark subdorsal and subadipose bands (vs. dorsal and ventral continuity of those bands), no confluence between subadipose and caudal-peduncle bands (vs. dorsal and ventral continuity of those bands), and fewer number of total vertebrae (31-33 vs. 33-35) .Cross section: oval.

🌀 Behaviour

Behavioural data for Rhyacoglanis Paranensis is currently being reviewed.

🦐 Diet

Diet information for Rhyacoglanis Paranensis is currently being compiled.

🥚 Reproduction

Reproduction data for Rhyacoglanis Paranensis is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.5±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.0055 × L3.11 (TL)
Max TL
8.9cm
Dorsal Rays
6
Anal Rays
6
Vertebrae
32

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2021

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.5
Predator
Climate Zone
Tropical
Described By
Shibatta & Vari, 2017

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