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💧 Freshwater Least Concern 🌡️ Tropical

Marsh knifefish

Rhamphichthys heleios Carvalho & Albert, 2015
Max Length
40 cm
Max Weight
Lifespan
Trophic Level
3.2
Depth
Climate
Tropical
Resilience
Vulnerability
39.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Occurs mostly in floodplains of large rivers, where it is frequently collected together with Rhamphichthys drepanium and R. marmoratus.

Scientific Name
Rhamphichthys heleios
Authority
Carvalho & Albert, 2015
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
40 cm
Trophic Level
3.2
Vulnerability
39.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

: elongated.

🌀 Behaviour

Behavioural data for Marsh knifefish is currently being reviewed.

🦐 Diet

Diet information for Marsh knifefish is currently being compiled.

🥚 Reproduction

Reproduction data for Marsh knifefish is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Solimões and Amazon rivers in Brazil upstream of the mouth of the Madeira River; also from a single locality in the Guaporé River in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00083 × L3.1 (TL)
Max TL
40cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Fishing Vulnerability
39.00/100
Moderate vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Carvalho & Albert, 2015

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