North Caucasian bleak
📖 Overview
Inhabits water bodies with slow to fast current, preferring places with slow current. Abundant in middle and lower parts of large rivers and their tributaries, reservoirs and swampy creeks; also in brackish water at river mouths, in estuaries and coastal lakes. Frequently schools in upper water layers. Feeds on plankton, insect larvae, and seeds. Spawns in shallow water at depth of 0.1-0.5 m. Lays sticky eggs, 1.4 mm in diameter, on submerged plants, rarely on pebbles .
🔬 Taxonomy
🐟 Physical Description
Vertebrae: 37 - 41. Diagnosed from congeners in Caspian and Black Sea basins by the following characters: origin of anal fin below branched dorsal rays 4-5; lateral line with 38-43 + 3 scales; anal fin with 11-16½ branched rays; 16-25 gill rakers; ventral keel exposed or partly or completely scales; body deep, depth 25-32% SL, markedly laterally compressed; caudal peduncle depth 1.7-2.1 times in its length .: fusiform / normal.
🌀 Behaviour
Behavioural data for North Caucasian bleak is currently being reviewed.
🦐 Diet
🥚 Reproduction
Spawns 1-2 times during its life. Deposits sticky eggs, 1.4 mm in diameter, on submerged plants, rarely on pebbles .
🌍 Habitat & Distribution
Freshwater; brackish; benthopelagic. Temperate; 10°C - 20°C
🌿 Ecology
plankton, insect larvae, and seeds
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect North Caucasian bleak.
🔍 Similar Species
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for North Caucasian bleak ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.