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Little Gulper Shark (Centrophorus uyato)

The little gulper shark, also known as the southern dogfish, is a deepwater shark recorded along the continental slope of southern Australia from off Forster, NSW, around southern Australia to off Freycinet Estuary, WA, including Tasmania. It inhabits continental and insular shelves and slopes, mostly at 400 to 800 m in Australian waters.

Conservation status

Commonwealth, EPBC Act 1999: Conservation dependent.

Seasonal planning

No species-specific activity or breeding months were found in the published sources used. Use the following as a works-planning prompt, not as seasonal biology.

Seasonal knowledge: Not documented in the sources used.

The month values are a general planning prompt only and do not represent known activity or breeding months for Centrophorus uyato.

  • Plan checks before disturbance: General planning window only. Check the work area before disturbance whenever works are scheduled.

Identification: Appearance

It reaches about 1.1 m total length. It has a short, triangular first dorsal fin and flat, block-like skin denticles with a short cusp.

It reaches about 1.1 m total length. It has a short, triangular first dorsal fin and flat, block-like skin denticles with a short cusp.

Identification: Confirming identity

Confirm the identity of any suspected record with a specialist and a photograph or voucher, as required by the relevant permit.

Distribution: Known range

In Australia, it is recorded along the continental slope from off Forster, NSW, around southern Australia to off Freycinet Estuary, WA, including Tasmania.

In Australia, it is recorded along the continental slope from off Forster, NSW, around southern Australia to off Freycinet Estuary, WA, including Tasmania.

Distribution: National mapping

The Commonwealth species distribution model (SNES) maps where the species or its habitat is known, likely or may occur. Use it with local records and site inspection.

Habitat: Habitat

It inhabits continental and insular shelves and slopes, living on or near the seabed. Australian records are mostly from depths of 400 to 800 m; its broader reported depth range is 50 to 1,400 m.

It inhabits continental and insular shelves and slopes, living on or near the seabed. Australian records are mostly from depths of 400 to 800 m; its broader reported depth range is 50 to 1,400 m.

Foraging habitat: Diet

It feeds mainly on fishes, crustaceans and squid, particularly mesopelagic fishes and squid. Gulper sharks move up slope gullies at night to feed on mesopelagic fishes.

It feeds mainly on fishes, crustaceans and squid, particularly mesopelagic fishes and squid. Gulper sharks move up slope gullies at night to feed on mesopelagic fishes.

Breeding habitat: Breeding

It is ovoviviparous and usually has one young, born at about 40 cm total length.

It is ovoviviparous and usually has one young, born at about 40 cm total length.

Sheltering habitat: Shelter

Not documented in the published sources used for this profile.

Not documented in the published sources used for this profile.

Threats: Threats

It is occasionally caught as bycatch by deep bottom trawls and longlines.

It is occasionally caught as bycatch by deep bottom trawls and longlines.

Threats: Works risk

Deep bottom trawling and longlining can catch the species as bycatch, so fishing activity in its slope habitat may harm individuals.

Survey methodology: 1. Commonwealth guidance

Use methods consistent with the Commonwealth survey guidelines and engage a specialist with the right permits.

For EPBC Act referrals, survey effort and methods should be consistent with the survey guidelines for Australia's threatened fish, read with the Significant impact guidelines 1.1.

Survey methodology: 2. Limits

A non-detection is not proof of absence. Match survey timing to the species and season, and record effort.

Vegetation associations

Source-checked associations and automatically indexed candidates are separated below. An association does not establish site presence, preference or dependence.

No species-specific vegetation association has been indexed or source-checked in this evidence library. This is an evidence gap, not evidence of no association.

Ecosystem associations

Source-checked associations and automatically indexed candidates are separated below. An association does not establish site presence, preference or dependence.

No species-specific ecosystem association has been indexed or source-checked in this evidence library. This is an evidence gap, not evidence of no association.

Soil and substrate associations

Source-checked associations and automatically indexed candidates are separated below. An association does not establish site presence, preference or dependence.

No species-specific soil association has been indexed or source-checked in this evidence library. This is an evidence gap, not evidence of no association.

Water and wetland associations

Source-checked associations and automatically indexed candidates are separated below. An association does not establish site presence, preference or dependence.

No species-specific water association has been indexed or source-checked in this evidence library. This is an evidence gap, not evidence of no association.

Fauna records and mapped habitat: Not yet analysed

Record locations can be overlaid with mapping, but record frequency alone does not measure habitat preference. No species is excluded from desktop assessments by this analysis.

No quality-controlled record-to-map analysis has been completed for this species. The existing generalised distribution dots and indicative range polygons have not been treated as precise occurrence coordinates.

A defensible run needs dated, independently attributable records, coordinate uncertainty, duplicate and captive-record checks, layer versions and regional scope. Preference and absence require additional survey-effort and detection evidence.

Habitat limitations and contrary evidence: No supported exclusion recorded

Not recorded is not the same as cannot occur. Low suitability, resident habitat, breeding habitat and occasional movement are different conclusions.

This library has not established a vegetation, ecosystem or soil-type exclusion for this species. This does not mean all habitat is suitable; the evidence needed to justify an exclusion has not been assembled.

Habitat limitations and contrary evidence: Before using a negative association

  • Confirm the taxon, geographic region, life stage and habitat function covered by the evidence.
  • Check survey methods, season, repeated effort and detectability before interpreting non-detection.
  • Investigate credible contradictory records and microhabitats absent from broad mapping.
  • Do not convert a missing map class, low record count or failed data request into species absence.

Before disturbance: 1. Desktop and approvals

Confirm whether the project could affect the species before works begin.

Check national mapping, state records and recent surveys for the site. An action likely to have a significant impact on this nationally listed species needs EPBC Act referral, and state permits apply where it is state listed.

Before disturbance: 2. Plan to avoid

Plan in-water works, vessel movements and lighting to avoid known habitat and sensitive periods, and set observer and shutdown procedures before works start.

During disturbance: 1. Controls

Keep works inside the approved footprint and conditions.

Use spotters and exclusion zones for in-water works and vessels, and pause works if the species is seen within the zone.

During disturbance: 2. Stop and report

If the species is found unexpectedly, stop work at that spot and contact the project ecologist and the relevant agency.

After disturbance: 1. Records

Record outcomes.

Record sightings, habitat lost or retained and any injury or death, and report them under the approval conditions.

Rehabilitation: 1. Restore

Restore disturbed habitat where possible.

Remove temporary structures, restore natural flow and substrate, and monitor water quality until it returns to baseline.

Sources