| Thông tin chủ yếu | Jørgensen, S.E. (ed.), 1979 |
|---|---|
| Các chú thích | Prefers relatively small streams, with gravel bottoms and gentle gradients. Spawning adults migrate from the sea into streams to spawn (Ref. 27547). The young fish usually stay in the stream for a year or two before entering the sea, but some populations never got to sea at all. In rare cases, some individuals of sea-going populations, may remain in fresh water for as long as eight years (Ref. 28866, 28869). Feeds on small fishes, crustaceans, and insects (Ref. 4925). |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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| Substrate | |
|---|---|
| Substrate Ref. | |
| Special habitats | |
| Special habitats Ref. |
| Tài liệu tham khảo | |
|---|---|
| Associations | |
| Associated with | |
| Association remarks | |
| Parasitism |
| Dạng thức ăn | mainly animals (troph. 2.8 and up) |
|---|---|
| Feeding type Ref. | Coker, G.A., C.B. Portt and C.K. Minns, 2001 |
| Nơi ăn mồi | hunting macrofauna (predator) |
| Feeding habit Ref. | Coker, G.A., C.B. Portt and C.K. Minns, 2001 |
| Estimation method | Mẫu nguyên thủy (gốc) | Chủng quần không được khai thác | Chú thích | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| Từ thành phần dinh dưỡng | 3.17 | 0.43 | |||
| Từ các loại thức ăn | 3.77 | 0.56 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| Tài liệu tham khảo | Jeppson, P.W. and W.S. Platts, 1959 | ||||