The little pygmy perch (''Nannoperca pygmaea'') is a freshwater species of

ray finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of skin ...

, a

temperate perch Percichthyidae, the temperate perches, are a family of freshwater ray-finned fish found in Australia and southern South America. Formerly placed in the order Perciformes, they are now placed in the order Centrarchiformes. The name Percichthyida ...

from the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Percichthyidae that is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to south-western

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

. It is known from just four sites in the Denmark catchment. It is found in

tannin Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and Precipitation (chemistry), precipitate proteins and various other organic compounds including amino acids and alkaloids. The term ''tannin'' is widel ...

stained, acidic and shallow streams in woodland dominated by ''

Melaleuca rhaphiophylla ''Melaleuca rhaphiophylla'', commonly known as swamp paperbark is a plant in the myrtle Family (biology), family, Myrtaceae and is Endemism, endemic to the Southwest Australia, south west of Western Australia. It has narrow, needle-like leaves an ...

''.

References

Nannoperca Freshwater fish of Western Australia little pygmy perch {{Centrarchiformes-stub