| Ref. principal | Schwalme, K., 1992 |
|---|---|
| Notas | Occurs in clear vegetated lakes, quiet pools and backwaters of creeks and small to large rivers (Ref. 5723, 10294). Usually solitary and highly territorial. Enters brackish water in the Baltic. Adult feeds mainly on fishes, but at times feeds heavily on frogs and crayfish (Ref. 27547). Cannibalistic as juveniles (Ref. 30578). Eggs and young are preyed upon by fishes, aquatic insect larvae, birds, and aquatic mammals (Ref. 1998). Does not generally undertake long migrations, but a few may move considerable distances (Ref. 27547). |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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| Substrato | |
|---|---|
| Substrato Ref. | |
| Special habitats | |
| Habitats especiais Ref. |
| Ref. | |
|---|---|
| Associações | |
| Associado a | |
| Observações da associação | |
| Parasitism |
| Tipo de alimentação | mainly animals (troph. 2.8 and up) |
|---|---|
| Tipo de alimentação Ref. | Schwalme, K., 1992 |
| Hábito alimentar | hunting macrofauna (predator) |
| Hábito alimentar Ref. | Schwalme, K., 1992 |
| Estimation method | Amostra original | População virgem (não pescada) | Nota | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| Da composição da dieta | 4.07 | 0.41 | 4.45 | 0.74 | Troph of adults from 2 studies. |
| Dos itens alimentares individuais | 4.47 | 1.07 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| Ref. | Schwalme, K., 1992 | ||||