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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Phenacogrammus Major

Phenacogrammus major Boulenger, 1903
Max Length
9.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Phenacogrammus Major (Phenacogrammus major), first described by Boulenger, 1903 is a small fish in the family Alestidae (order Characiformes). Adults typically reach 9.50 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Alestidae kept in the hobby.

Scientific Name
Phenacogrammus major
Authority
Boulenger, 1903
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
9.5 cm
Trophic Level
3.1
Resilience
High
Vulnerability
11.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Anal spines: 0; Anal soft rays: 21 - 25. Diagnosis: flanks with intense pigment band from a vertical through anal fin origin and extending caudad to posterior margin of median caudal fin rays; 24-26 scales in longitudinal series; adipose fin broad and rounded, its total length 3x or more its length at base . : fusiform / normal.

🌀 Behaviour

Behavioural data for Phenacogrammus Major is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01072 × L3.02 (TL)
Max TL
9.5cm
Anal Rays
23

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
11.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Boulenger, 1903

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Alestopetersius major major Boulenger 1903 Synonym
Hemigrammopetersius major Boulenger 1903 Synonym
Micralestes major Boulenger 1903 Synonym
Petersius major Boulenger 1903 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 50 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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