| Main Ref. | Fischer, W., G. Bianchi and W.B. Scott (eds.), 1981 | 
|---|---|
| Remarks | Exclusively occurs in deep-sea, living in soft mud deep sea bottom (Ref. 98500). Predominantly benthic species inhabiting only muddy bottoms in cold waters (5-12°C). Vertical distribution varies in size, older individuals occur in deeper depth range from 200 to 700 m, most abundant between 300 and 600 m (Ref. 434). Key functional intermediate between decaying organic matter and larger invertebrates and fish (Ref. 107108). | 
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies | 
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| Substrate | Benthic: mobile; demersal; Soft Bottom: mud; | 
|---|---|
| Substrate Ref. | Cardoso, I.A. and R.N. Burukovsky, 2014 | 
| Special habitats | |
| Special habitats Ref. | 
| Ref. | Fischer, W., G. Bianchi and W.B. Scott (eds.), 1981 | 
|---|---|
| Associations | |
| Associated with | |
| Association remarks | |
| Parasitism | 
| Feeding type | |
|---|---|
| Feeding type Ref. | |
| Feeding habit | |
| Feeding habit Ref. | 
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | |||||
| From individual food items | |||||
| Ref. | |||||