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💧 Freshwater Least Concern 🌡️ Tropical

Prosomyleus Rhomboidalis

Prosomyleus rhomboidalis Cuvier, 1818
Max Length
40.7 cm
Max Weight
5.0 kg
Lifespan
-
Trophic Level
2.6
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
25.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Occurs along the calm banks of main rivers and also near the rapids. During the rainy season when growth is maximal, it feeds on fruits and consumes the seeds of palm trees like Euterpa oleracea, Taralea oppositifolia, Mauritia flexuosa and other plants like Inga sp. and Psidium sp. which they crush with their strong jaws. During the dry season, their diet consists more of aquatic plants like Mourea fluviatilis and Apinagia richardiana and gastropods and fish . Its flesh is excellent but it is preferable not to consume it at the end of the rainy season because then its flesh is very high in fat .

Scientific Name
Prosomyleus rhomboidalis
Authority
Cuvier, 1818
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
40.7 cm
Max Weight
5 kg
Trophic Level
2.6
Resilience
Medium
Vulnerability
25.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Prosomyleus
Prosomyleus
Species
Prosomyleus Rhomboidalis
Prosomyleus rhomboidalis

🐟 Physical Description

Physical description for Prosomyleus Rhomboidalis is currently being compiled.

🌀 Behaviour

Behavioural data for Prosomyleus Rhomboidalis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Distinct pairing during copulation .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Amazon River basin, north and east Guiana Shield rivers.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.6±0.23
Food Items

fruits and consumes the seeds of palm trees like Euterpa oleracea, Taralea oppositifolia, Mauritia f

📐 Morphometrics

Length–Weight Relationship: W = 0.02089 × L2.96 (TL)
Max TL
40.7cm
Max Weight
5,000g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
2.6
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Cuvier, 1818

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