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Diadromous Least Concern 🌡️ Subtropical

Mountain mullet

Dajaus monticola Bancroft, 1834
Max Length
36 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
32.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Adults inhabit pools and runs of small to medium rivers . They live in freshwater rivers and streams. Young are encountered occasionally in brackish waters. This is the only mullet that ascends far inland and spends all its adult life in freshwater . Tend to be few and solitary in upper streams, but form uneven schools in larger streams at lower elevations . Oviparous, eggs are pelagic and non-adhesive . Usually spawn during the rainy season . Caught and consumed by local populations in some parts of central America.

Scientific Name
Dajaus monticola
Authority
Bancroft, 1834
Habitat
Diadromous
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
36 cm
Trophic Level
3
Resilience
High
Vulnerability
32.00/100
Migration
Catadromous
Water Temp
20–31 °C
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Dajaus
Dajaus
Species
Mountain mullet
Dajaus monticola

🐟 Physical Description

Dorsal spines (total): 5; Dorsal soft rays (total): 8; Anal spines: 2; Anal soft rays: 9. : fusiform / normal.

🌀 Behaviour

Behavioural data for Mountain mullet is currently being reviewed.

🦐 Diet

Diet information for Mountain mullet is currently being compiled.

🥚 Reproduction

Size at Maturity
16.6cm TL

Spawning period coincides with the rainy season in some areas where it occurs .

🌍 Habitat & Distribution

Marine; freshwater; brackish; pelagic-neritic; catadromous . Subtropical; 20°C - 31°C ; 37°N - 0°N, 113°W - 59°W North Carolina to Texas in the USA south to Venezuela, including the West Indies.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Catadromous
Trophic Level
3±0.4
🐠 Schooling 🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.01202 × L3.03 (TL)
Max TL
36cm
Dorsal Spines
5
Dorsal Rays
8
Anal Spines
2
Anal Rays
9

🌡️ Water Parameters & Tolerance

Temperature Range
20–31°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
32.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Bancroft, 1834

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