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Danube ruffe (Gymnocephalus baloni) fish species and information / pictures of Danube ruffe - Gymnocephalus baloni

Danube ruffe (Gymnocephalus baloni) fish species information

Scientific Name
Gymnocephalus baloni

Common Name
Danube ruffe

Biology
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 (Ref. 59043).

Classification

Classified By

Holc?k & Hensel, 1974

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Perches (Percidae)

Distribution

Region

Europe

Distribution

Europe: Danube (from delta to Germany) and Dniepr (from delta to Kiev) drainages; expected in Dniestr. In Appendix III of the Bern Convention (protected fauna).

Range

Unknown

Environment

Climate

Temperate

Water Temperature From

10 °C

Water Temperature To

20 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 6.8 - 7.8; dH range: 10 - 20 benthopelagic

Trophic Level

3.5 s.e. 0.37 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

15.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries:

Vulnerability

Low to moderate vulnerability (29 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)