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💧 Freshwater Least Concern 🌡️ Temperate

Danube ruffe

Gymnocephalus baloni Holcík & Hensel, 1974
Max Length
15 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
29.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Inhabits open sandy and muddy bottom in backwaters and large rivers with moderate current. Undertake migration from river mainstreams to backwaters to spawn. Nocturnal, feeding on small invertebrates .

Scientific Name
Gymnocephalus baloni
Authority
Holcík & Hensel, 1974
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
15 cm
Trophic Level
3.5
Resilience
Medium
Vulnerability
29.00/100
Water Temp
10–20 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 14 - 16. Distinguished uniquely from its congeners by its body depth, 27-30% SL. Differs further from other species of the genus by the combination of the following characters: flank grey with a few large, irregular, dark blotches; and dorsal fin with 14-16 spines .: fusiform / normal.

🌀 Behaviour

Behavioural data for Danube ruffe is currently being reviewed.

🦐 Diet

Diet information for Danube ruffe is currently being compiled.

🥚 Reproduction

Reproduction data for Danube ruffe is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 6.8 - 7.8; dH range: 10 - 20. Temperate; 10°C - 20°C

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.5±0.37
🌙 Nocturnal

📐 Morphometrics

Length–Weight Relationship: W = 0.01047 × L3.05 (TL)
Max TL
15cm
Dorsal Spines
15

🌡️ Water Parameters & Tolerance

Temperature Range
10–20°C
pH Range
6.8–7.8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Holcík & Hensel, 1974

👥 Community & Contribute

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