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💧 Freshwater Endangered 🌡️ Tropical

Bryconalestes Derhami

Bryconalestes derhami Géry & Mahnert, 1977
Max Length
8.2 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Bryconalestes Derhami (Bryconalestes derhami) is a ray-finned fish. It inhabits freshwater waters in pelagic environments. This species can reach a maximum total length of 8.2 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Endangered on the IUCN Red List.

Scientific Name
Bryconalestes derhami
Authority
Géry & Mahnert, 1977
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
EN
Max Length
8.2 cm
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Bryconalestes
Bryconalestes
Species
Bryconalestes Derhami
Bryconalestes derhami

🐟 Physical Description

Anal spines: 0; Anal soft rays: 22 - 24. Diagnosis: parietal fontanella always present, even in adults; precaudal spot ovoid, anteriorly pointed and not extending unto caudal-fin rays; 5.5 scales between lateral line and dorsal fin; 26-30 lateral line scales; 19-21 anal fin branched rays; 6/8 premaxillary teeth; 12-15 gill rakers on lower limb of first gill arch . : fusiform / normal.

🌀 Behaviour

Behavioural data for Bryconalestes Derhami is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01072 × L3.02 (TL)
Max TL
8.2cm
Anal Rays
23

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Géry & Mahnert, 1977

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