Overview

Distribution

Range Description

The slender cuttlefish is endemic to southern Australia, occurring from southern New South Wales to Western Australia including Tasmania (Reid et al. 2005).
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Ecology

Habitat

outer shelf
  • UNESCO-IOC Register of Marine Organisms
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Habitat and Ecology

Habitat and Ecology
It is a demersal species found in neritic and shallow coastal waters (Reid et al. 2005). This species may congregate to spawn (Reid et al. 2005).

Systems
  • Marine
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Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 6 samples.

Environmental ranges
  Depth range (m): 36.4 - 124
  Temperature range (°C): 13.813 - 18.182
  Nitrate (umol/L): 1.010 - 4.242
  Salinity (PPS): 35.184 - 35.557
  Oxygen (ml/l): 4.928 - 5.515
  Phosphate (umol/l): 0.268 - 0.417
  Silicate (umol/l): 1.174 - 2.135

Graphical representation

Depth range (m): 36.4 - 124

Temperature range (°C): 13.813 - 18.182

Nitrate (umol/L): 1.010 - 4.242

Salinity (PPS): 35.184 - 35.557

Oxygen (ml/l): 4.928 - 5.515

Phosphate (umol/l): 0.268 - 0.417

Silicate (umol/l): 1.174 - 2.135
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Barratt, I. & Allcock, L.

Reviewer/s
Reid, A., Rogers, Alex & Bohm, M.

Contributor/s
Herdson, R. & Duncan, C.

Justification
Sepia braggi has been assessed as Least Concern. It is endemic to southern Australia and is sometimes caught as bycatch in trawls, but it is not targeted and the population size is likely not affected by this low intensity activity.
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Population

Population
The population size of this species is unknown.

Population Trend
Unknown
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Threats

Major Threats
Ocean acidification caused by increased levels of carbon dioxide in the atmosphere is potentially a threat to all cuttlefish. Studies have shown that under high pCO2 concentrations, cuttlefishes actually lay down a denser cuttlebone which is likely to negatively affect buoyancy regulation (Gutowska et al. 2010). Alongside other cuttlefish (e.g. Sepia apama) it is caught as bycatch and is used as bait and food (Reid et al. 2005).
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Management

Conservation Actions

Conservation Actions
No conservation measures are currently needed for this species and none are in place. Further research is recommended regarding population trends, life history traits and threats impacting this species.
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