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💧 Freshwater Near Threatened 🐠 Aquarium 🌡️ Temperate

Illyrian Chub

Squalius illyricus Heckel & Kner, 1858
Max Length
30 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Temperate
Resilience
Low
Vulnerability
51.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Inhabits streams with swift water and lakes in karstic areas . Occurs in water courses on low plains, with little current. Feeds on invertebrates. Threatened due to habitat destruction, pollution and the introduction of other species .

Scientific Name
Squalius illyricus
Authority
Heckel & Kner, 1858
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
NT
Max Length
30 cm
Trophic Level
3.5
Resilience
Low
Vulnerability
51.00/100
Water Temp
5–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Differs from its congeners in Western Balkans and Adriatic drainages by having the following characters: scales on lateral line 46-54; a broad dark spot on scale pocket and a narrow series of pigments along free margin of each flank scale (indistinct in juveniles); head depth 68-80% HL in individuals over 9 cm SL; posterior margin of anal convex or almost straight; dorsal fin with 8½ branched rays; anal fin with 8-9½ branched rays; eye diameter 18-34% HL in individuals 9-15 cm SL, 16-18% in individuals over 25 cm SL; snout blunt, dorsal profile convex; lower jaw short, length less than depth of operculum; 5th infraorbital bone small or absent; mouth subterminal; and fins yellow to black in life .: fusiform / normal.

🌀 Behaviour

Behavioural data for Illyrian Chub 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. Temperate; 5°C - 25°C ; 46°N - 42°N, 13°E - 20°E

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.5±0.37
Food Items

invertebrates

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L3.13 (TL)
Max TL
30cm

🌡️ Water Parameters & Tolerance

Temperature Range
5–25°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
51.00/100
Moderate-High vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Heckel & Kner, 1858

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Illyrian chub
🌍CES jelec ilyrský
🇫🇮Finnish Illyrianseipi
🇭🇷Croatian Ilirski klen
🇮🇹Italian Cavedano illirico
🌍SQI Mëlyshi i zi
🇨🇳Chinese 南斯拉夫雅羅魚

Scientific Synonyms

Scientific Name Author Year Status
Leuciscus illyricus Heckel & Kner 1858 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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