The little pygmy perch (Nannoperca pygmaea) is a freshwater species of ray finned fish, a temperate perch from the family Percichthyidae that is endemic to south-western Western Australia.

It is known from just four sites[2] in the Denmark catchment.

[1] It is found in tannin stained, acidic and shallow streams in woodland dominated by Melaleuca rhaphiophylla.

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