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> Centrarchiformes (Basses) > Percichthyidae (Temperate perches)
Etymology: Nannoperca: Latin, nannus = small + Greek, perke = perch (Ref. 45335); pygmaea: The specific epithet is the feminised form of the Latin noun 'pygmaeus' meaning 'dwarf', referring to it being the smallest of the pygmy perches; noun in apposition. applied as a noun in apposition, and in Common name Little Pygmy Perch applied in recognition of the relative small size..

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce; saumâtre benthopélagique. Subtropical; 34°S - 35°S, 117°E - 118°E (Ref. 93277)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Oceania: Western Australia. The rarity of the species and restricted range requires urgent protection at the state and federal level.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 3.9 cm SL mâle / non sexé; (Ref. 93277)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 7 - 9; Rayons mous dorsaux (Total): 8; Épines anales 3; Rayons mous anaux: 6 - 7. This species is distinguished by the following characters: small mouth; deeply notched dorsal fin; poorly developed two-part and interrupted lateral line; differs from N. australis, N. oxleyana and N. variegata in having an exposed and serrated preorbital bone and jaws just reaching to below the anterior margin of the eye (vs. a smooth and hidden preorbital and the jaws reaching to at least the pupil); from N. vittata by having 5-10 thin lateral stripes most obvious below lateral line and poorly developed tube scales (vs. well developed), a more distinct haloed blackish spot resembling an ocellus at the base of the caudal fin, the hind margin of the scales on the caudal peduncle are without distinct pigment, and the belly is without a colour pattern; from N. obscura in having a distinct ocellus at the base of caudal fin (vs. an indistinct barring), as well as a dark spot behind operculum and lack of dusky scale margins; from N. balstoni, in having an exposed rear edge of the preorbital (vs. hidden under the skin), fewer transverse scale rows (13 vs. 15-16), a smaller mouth (rarely reaching eye vs. reaching well beyond the eye), ctenoid body scales (vs. cycloid), generally fewer pectoral rays and a smaller maximum size (Ref. 93277).

The species is rare and restricted in its range. Inhabits tannin stained, acidic and shallow Melaleuca rhaphiophylla streams (Ref. 93277).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur : Arratia, Gloria | Collaborateurs

Morgan, D.L., S.J. Beatty and M. Adams, 2013. Nannoperca pygmaea, a new species of pygmy perch (Teleostei: Percichthyidae). Zootaxa 3637(4):401-411. (Ref. 93277)

Statut dans la liste rouge de l'IUCN (Ref. 126983)

Menacé (EN) (B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)); Date assessed: 09 January 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00404 - 0.02714), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).

Niveau trophique (Ref. 69278): 3.1 ±0.4 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Nannoperca pygmaea Morgan, Beatty & Adams, 2013