The Ebro nase is a brown fish that can reach 20 cm in length. It feeds on invertebrates and aquatic plants, and inhabits the middle courses of rivers forming large schools. Its breeding season is between April and June.
It is a species which only lives on the Iberian Peninsula and is mainly distributed along the rivers of the eastern Cantabrian watershed, in the Ebro basin and in some Mediterranean basins (Doadrio, 2001). The introduction of exotic species, the presence of water infrastructures and water pollution are considered the most important factors behind the decline of some populations.
According to data from URA and the Provincial Council of Gipuzkoa’s monitoring networks, the Ebro nase population has increased in the Basque Country over the last decade and a half.
It has been designated a keystone species in the SAC River Leitzaran. The removal of obstacles on the lower reaches of the river features among the conservation measures defined for the species.
Parachondrostoma miegii (Ebro nase)
Annexes to Directive 92/43/CEE: II
|Site||Population size||Conservation status|
|SAC River Leitzaran ES2120013||C||B|
|SAC River Bidasoa ES2200014||- - -||- - -|
|SAC River Baztan and Artesiaga Brook ES2200023||- - -||- - -|
|SAC Señorío de Bertiz ES2200017||- - -||- - -|
|SCI Artikutza ES2200010||- - -||- - -|
|SCI Belate ES2200018||- - -||- - -|
A: Excellent representation B: Good representation C: Significant representation. D: Insignificant representation
Basque Country Nature information system - Ebro nase
National inventories – Chondrostoma miegii (Ministry of Agriculture, Food and the Environment)
SIBIC 2014. Spanish Fish Chart. Electronic publication (version 01/2015).