| Main Ref. | Coad, B., 1997 |
|---|---|
| Remarks | Occurs mainly in the open sea, occasionally approaching the shore and sometimes forming large schools. Rises to the surface in the spring months, but descending to as much as 78 m in late summer (apparently rising again in October-November, but descending once more in winter). Breeds intermittently from end of April to November, mainly in July, in the open sea. |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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| Substrate | |
|---|---|
| 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. | Coad, B., 1997 |
| Feeding habit | |
| Feeding habit Ref. |
| Estimation method | Original sample | Unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | 3.01 | 0.08 | |||
| From individual food items | 3.00 | 0.00 | Tentative trophic level derived from 1 + troph of a single food item | ||
| Ref. | Badalov, F.G., 1972 | ||||