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💧 Freshwater Least Concern 🌡️ Tropical

Xenocharax Crassus

Xenocharax crassus Pellegrin, 1900
Max Length
18.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
13.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found almost exclusively in forested tributaries or in savannah streams under dense gallery forest .

Scientific Name
Xenocharax crassus
Authority
Pellegrin, 1900
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
18.6 cm
Trophic Level
3
Vulnerability
13.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 18 - 22; Anal spines: 0; Anal soft rays: 13 - 15. Diagnosis: Xenocharax crassus is distinguished from Xenocharax spilurus by the presence of a large black mark located anteriorly on the dorsal fin, vs. absence; a small, round, black spot at the posterior half of the caudal peduncle and covering a total of 4 to 6 scales, ±2 to 3 scales in horizontal and vertical direction alike, vs. a large ovoid spot covering a total of about 35 to 46 scales, ±8 to 10 scales in horizontal and vertical direction alike; and a wider mouth, 29-34% of head length vs. 24-29% . In addition, for the specimens of similar sizes, X. crassus has a shorter dorsal-adipose distance than X. spilurus; further, most X. crassus specimens have 6 supraneurals vs. 7 in X. spilurus . : fusiform / normal.

🌀 Behaviour

Behavioural data for Xenocharax Crassus 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±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.0182 × L3.05 (TL)
Max TL
18.6cm
Dorsal Rays
20
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Pellegrin, 1900

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