| Main Ref. | Cairns, S.D., D.R. Calder, A. Brinckmann-Voss, C.B. Castro, D.G. Fautin, P.R. Pugh, C.E. Mills, W.C. Jaap, M.N. Arai, S.H.D. Haddock and D.M. Opresko, 2003 | 
|---|---|
| Remarks | Occurs at depths between 50 to 100m (Ref. 96391). Sessile (Ref. 3123). Solitary (Ref. 2377). Dwells in fine muddy clay substrates. Recorded from 3.5% salinity and temperatures of 6°C to 7°C. Predatory (Ref. 128428). | 
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies | 
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| Substrate | Benthic: sessile; Soft Bottom: sand ( fine, ); silt; mud; | 
|---|---|
| Substrate Ref. | Callaway, R., J. Alsvag, I. de Boois, J. Cotter, A. Ford, H. Hinz, S. Jennings, I. Kroncke, J. Lancaster, G. Piet, P. Prince and S. Ehrich, 2002 | 
| Special habitats | |
| Special habitats Ref. | 
| Ref. | Vader, W., 1970 | 
|---|---|
| Associations | commensalism; | 
| Associated with | Onisimus normani; Aristias neglectus. | 
| Association remarks | Juvenile Onisimus normani enter during the summer and live in association until autumn of the next year. Associated amphipods spend some time in the gastrovascular cavity of the host. | 
| Parasitism | 
| Feeding type | |
|---|---|
| Feeding type Ref. | |
| Feeding habit | hunting macrofauna (predator) | 
| Feeding habit Ref. | Vader, W., 1970 | 
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | |||||
| From individual food items | 3.52 | 0.55 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| Ref. | |||||