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💧 Freshwater Vulnerable 🐠 Aquarium 🌡️ Subtropical

Squalius Aradensis

Squalius aradensis Pereira, 1998
Max Length
13.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
34.00/100
Typical Length
-
Depth Zone
-

📖 Overview

An ubiquitous species which inhabits small to medium sized streams with Mediterranean water regime. May be restricted to very small pools during summer. Mature individuals breed in shallow riffle habitats in fast-flowing water .

Scientific Name
Squalius aradensis
Authority
Pereira, 1998
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
VU
Max Length
13.1 cm
Trophic Level
3.3
Resilience
Medium
Vulnerability
34.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 3; Dorsal soft rays (total): 8; Anal spines: 3; Anal soft rays: 7 - 8; Vertebrae: 37 - 38. Diagnosed from its congeners in Iberian Peninsula by having the following characters: infraorbitals 4 and 5 very large, completely fused; 33-40 + 2 scales on lateral line; snout rounded; mouth subterminal, upper jaw projecting; head length less than body depth; and 2½ -3 scale rows between lateral line and pelvic fin origin . Preopercular-mandibular canal communicates with infraorbital canal .: fusiform / normal.

🌀 Behaviour

Behavioural data for Squalius Aradensis 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; potamodromous . Subtropical; 38°N - 37°N, 9°W - 8°W south of Portugal (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Potamodromous
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L3.13 (TL)
Max TL
13.1cm
Dorsal Spines
3
Dorsal Rays
8
Anal Spines
3
Anal Rays
8
Vertebrae
38

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Pereira, 1998

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