Main Ref. | Whitehead, P.J.P., 1985 |
---|---|
Remarks | Feeds on fish and benthic crustaceans (Ref. 188). Euryhaline, anadromous, moving northward in the Black Sea in spring and early summer. Remains at depths of 40-90 m during winter, moving to shallower waters in spring and near the bottom at water temperatures of 10-15°C in summer and autumn (Ref. 10439). In Kagoul Lake in the Danube Delta, numerous juveniles 2.6-7.0 cm FL were noted in July-August at water temperatures of 15.8-19.5°C, oxygen concentration of 9.9-10.4 ml/l and pH of 8.0-8.1 (Ref. 10440). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
---|---|---|---|---|
Marine zones / Brackish and freshwater bodies |
|
|
|
|
Substrate | Soft Bottom |
---|---|
Substrate Ref. | |
Special habitats | |
Special habitats Ref. |
Ref. | |
---|---|
Associations | |
Associated with | |
Association remarks | |
Parasitism |
Feeding type | mainly animals (troph. 2.8 and up) |
---|---|
Feeding type Ref. | Whitehead, P.J.P., 1985 |
Feeding habit | hunting macrofauna (predator) |
Feeding habit Ref. | Whitehead, P.J.P., 1985 |
Estimation method | Original sample | Unfished population | Remark | ||
---|---|---|---|---|---|
Troph | s.e. | Troph | s.e. | ||
From diet composition | 3.98 | 0.59 | Troph of juv./adults from 1 study. | ||
From individual food items | 3.93 | 0.67 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. |