Main Ref. | Svetovidov, A.N., 1986 |
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Remarks | Lives above the bottom and often near the surface. Young live closer to the shore. Proportion of fish in the diet increases with age (Ref. 3663). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
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Marine zones / Brackish and freshwater bodies |
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Substrate | Soft Bottom: rocky; |
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Substrate Ref. | |
Special habitats | |
Special habitats Ref. |
Ref. | |
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Associations | |
Associated with | |
Association remarks | |
Parasitism |
Feeding type | mainly animals (troph. 2.8 and up) |
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Feeding type Ref. | Svetovidov, A.N., 1986 |
Feeding habit | hunting macrofauna (predator) |
Feeding habit Ref. | Svetovidov, A.N., 1986 |
Estimation method | Original sample | Unfished population | Remark | ||
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Troph | s.e. | Troph | s.e. | ||
From diet composition | 4.36 | 0.18 | 4.17 | 0.66 | Troph of adults from 15 studies. |
From individual food items | 3.57 | 0.74 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. | Daan, N., 1989 |