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💧 Freshwater Vulnerable 🐠 Aquarium 🌡️ Subtropical

Eastern Aegean bleak

Alburnus demiri Özuluğ & Freyhof, 2008
Max Length
9.4 cm
Max Weight
-
Lifespan
-
Trophic Level
2.8
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
28.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Eastern Aegean bleak (Alburnus demiri) is a ray-finned fish of the family Cyprinidae. It inhabits freshwater waters. This species can reach a maximum total length of 9.4 cm. With a trophic level of 2.8, it is an omnivore, consuming both plant and animal matter. It is assessed as Vulnerable on the IUCN Red List.

Scientific Name
Alburnus demiri
Authority
Özuluğ & Freyhof, 2008
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
VU
Max Length
9.4 cm
Trophic Level
2.8
Resilience
Medium
Vulnerability
28.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 12; Anal soft rays: 16 - 18. Diagnosed from its congeners by the combination of the following characters: origin of anal fin below branched dorsal-fin ray 7-8; 13-14½ branched anal-fin rays; 18-21 gill rakers; 43-46+3 lateral line scales; ventral keel exposed for 6-9 scales in front of anus; head length 23-26% SL, 1.1-1.2 times in body depth at dorsal-fin origin; predorsal length 57-61% SL; caudal peduncle depth 11% SL, 1.6-1.9 times in its length; caudal peduncle length 18-20% SL; eye diameter 6.4-7.2% SL, 0.97-1.04 times in interorbital distance; body depth at dorsal-fin origin 26-28% SL: faint, dark lateral stripe on body; numerous small tubercles in nuptial males . : fusiform / normal.

🌀 Behaviour

Behavioural data for Eastern Aegean bleak 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. Subtropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.8±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00661 × L3.13 (TL)
Max TL
9.4cm
Dorsal Rays
12
Anal Rays
17

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2013

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
28.00/100
Low vulnerability
Trophic Level
2.8
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Özuluğ & Freyhof, 2008

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