Main Ref. | Robins, C.R. and G.C. Ray, 1986 |
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Remarks | Found mostly over mud bottoms in estuaries and coastal waters to about 40 m depth. A cryptic species; tolerates low salinities; occurs frequently in brackish bays and estuaries, even on occasion in fresh water. Feeds chiefly on fishes, also on crabs and shrimps. Juveniles take mainly small bottom-living invertebrates. |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
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Marine zones / Brackish and freshwater bodies |
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Substrate | |
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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. | Robins, C.R. and G.C. Ray, 1986 |
Feeding habit | hunting macrofauna (predator) |
Feeding habit Ref. | Robins, C.R. and G.C. Ray, 1986 |
Estimation method | Original sample | Unfished population | Remark | ||
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Troph | s.e. | Troph | s.e. | ||
From diet composition | 3.58 | 0.58 | |||
From individual food items | 3.48 | 0.48 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. | Minello, T.J., R.J. Zimmerman and T.E. Czapla, 1989 |