Overview
Within Europe, it will not be confused with any species except the brown trout or the Atlantic salmon, which are also members of the Salmonidae family. The huchen can be identified by counting the scales along the lateral line. It has by far the smallest scales numbering 180 200 as compared to 110 120 in the brown trout (called sea trout in Europe), and 120 130 in the Atlantic salmon. It is completely covered with minute black speckles, but never has the red spots which may be present on the brown trout and Atlantic salmon.
Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Salmonidae
- Genus
- Hucho
- Species
- hucho
Habitat
It also occurs in the basin of the Prut River. Introduced into other European rivers early in the 1900's, it was largely unsuccessful. Unlike the brown trout and the Atlantic salmon (Salmo salar), both of which the huchen resembles, it stays in the river systems and does not migrate to the sea.
Diet
The Danube salmon primarily feeds on smaller fish such as minnows, trout, and other salmonids, making it an apex predator in its river habitats. It also consumes insects, crustaceans, and amphibians, especially during its juvenile stages. Feeding typically occurs in fast currents where it ambushes prey.
Behavior
Danube salmon are solitary and territorial, often defending specific river sections from rivals. They are most active during dawn and dusk, preferring cold, oxygen-rich waters, and exhibit aggressive behavior when spawning. This species remains in freshwater rivers throughout its life, unlike migratory salmon.
Fishing
Because it is relatively rare, it is not common food fish, nor is it as highly valued as other salmonids. However, it is of good quality and is certainly edible. In all of its range, the huchen is presently endangered by commercialization and habitat deterioration
Conservation Status
Listed as Endangered by IUCN.