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💧 Freshwater Least Concern 🌡️ Tropical

Trigonectes Rubromarginatus

Trigonectes rubromarginatus Costa, 1990
Max Length
12 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Trigonectes Rubromarginatus (Trigonectes rubromarginatus) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters. This species can reach a maximum total length of 12 cm. With a trophic level of 3.4, 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
Trigonectes rubromarginatus
Authority
Costa, 1990
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
12 cm
Trophic Level
3.4
Resilience
High
Vulnerability
10.00/100
Migration
Non-migratory
Water Temp
23–27 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 10 - 14; Anal soft rays: 16 - 18. Distinguished from other species of the genus, except T. strigabundus, by having straight mouth cleft. Differs from T. strigabundus and all other species of the genus by the elongated pelvic fin of the males, whose tip is reaching to the base of 11th to 15th anal rays and the presence of a bright red stripe along the ventral margin of the male caudal fin. Seems to differ from T. strigabundus by having a larger size .

🌀 Behaviour

Behavioural data for Trigonectes Rubromarginatus is currently being reviewed.

🦐 Diet

Diet information for Trigonectes Rubromarginatus is currently being compiled.

🥚 Reproduction

Reproduction data for Trigonectes Rubromarginatus is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic; non-migratory. Tropical; 23°C - 27°C South America: Araguaia River basin, Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00661 × L3.1 (TL)
Max TL
12cm
Dorsal Rays
12
Anal Rays
17

🌡️ Water Parameters & Tolerance

Temperature Range
23–27°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Tropical
Described By
Costa, 1990

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