Biodiversity

Threatened species

The Action Plan for Australian freshwater fishes

R. Wager and P. Jackson
Environment Australia, June 1993
ISBN 0 6421 6818 0

Recovery outlines (continued)

Species recovery outline: Ewen's Pygmy Perch

Family: Nannopercidae

Scientific name: Nannoperca variegata

English names: Ewen's Pygmy Perch, Variegated Pygmy Perch

Species taxonomic status: Formally described by Kuiter and Allen, 1986.

Species survival status:

  1. Action plan status: Vulnerable.
  2. Australian Society for Fish Biology status: Vulnerable.
  3. Proposed new IUCN criteria status: Vulnerable (altered habitat, interaction with introduced species).

Former distribution: Unknown. Species only described in 1986.

Current distribution: Only known from Ewen's Ponds near Mount Gambier, South Australia and from the Glenelg River drainage near Winnap, western Victoria.

Habitat: Prefers clear, flowing streams or ponds with abundant aquatic vegetation.

Reasons for decline: Populations in South Australia are not considered to have declined in abundance or range over last decade. Factors responsible for a decline of Victorian populations not well known.

  1. Most probable cause of decline likely to be generalised destruction of habitat including removal of aquatic and riparian vegetation and drainage of swamps.
  2. Interactions with introduced species may also be implicated in the decline:

Conservation reserves on which species occurs: Ewen's Ponds Conservation Park (SA).

Other public lands on which species occurs: None.

Other land on which species occurs: Private land.

Is knowledge about species adequate for objectives and actions to be defined accurately? (If not provide list of additional studies required): No.

  1. Determine habitat requirements.
  2. Investigate potential threatening processes.
  3. Identify reproduction requirements.

Recovery objectives:

  1. Protect existing populations and habitat.
  2. Establish new populations in suitable habitat.

Management actions already initiated:

  1. Listed under schedule two of the Flora and Fauna Guarantee Act.
  2. Preparation of a Recovery Plan outlining management proposals is being prepared with funding from the ANPWS Endangered Species Program.

Management actions required:

  1. Declaration of additional conservation reserves: Yes.
  2. Habitat management: Yes.
  1. Feral animal control: Yes.
  1. Translocation or re-establishment of populations: No.
  2. Captive breeding: Yes.
  1. Other: No.

Organisations responsible for conservation of species:

Other organisations or individuals involved:

Can recovery plan be carried out with existing resources?: No.

  1. A joint Yarra and Ewen's pygmy perch study team is proposed. See Yarra pygmy perch for details.

Remarks:

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