Main Ref. | Allen, G.R., 1989 |
---|---|
Remarks | Inhabit still or flowing rivers, from tidal reaches to far inland. Also found in some impoundments (Lake Argyle, WA). Often shelter among overhanging vegetation or submerged roots. Adults are infrequently found in coastal marine waters (Ref. 44894). Occur in larger streams. Surface-dwelling predator of small fishes, insects (Ref. 205, 44894) and crustaceans (Ref. 44894). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
---|---|---|---|---|
Marine zones / Brackish and freshwater bodies |
|
|
|
|
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. | Allen, G.R., S.H. Midgley and M. Allen, 2002 |
Feeding habit | hunting macrofauna (predator) |
Feeding habit Ref. | Allen, G.R., S.H. Midgley and M. Allen, 2002 |
Estimation method | Original sample | Unfished population | Remark | ||
---|---|---|---|---|---|
Troph | s.e. | Troph | s.e. | ||
From diet composition | |||||
From individual food items | 3.61 | 0.55 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. |