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Galaxiiformes (Southern smelts) >
Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335); mcdowalli: Named for the late Dr Robert (Bob) Montgomery McDowall (1939-2011),.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico; não migratória; intervalo de profundidade 0 - 1 m (Ref. 98815). Subtropical
Oceania: Australia.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 8.4 cm FL macho/indeterminado; (Ref. 98815); peso máx. publicado: 6.00 g (Ref. 98815)
Descrição suscinta
Morfologia | Morfometria
Raios dorsais (total): 8-12; Raios anais : 11 - 12; Vértebras: 54 - 56. This species is distinguished from all other species within the Galaxias olidus complex by the following characters: segmented pelvic fin rays 8; high vertebral count 55; head length about as long as pelvic fin to anal fin length distance; dorsal and anal fin are bases relatively long (9.9-13.0 and 11.0-12.5 % SL, respectively); snout long (27.0-33.7 % HL), post-orbital head length short (48.9-55.2 % HL); inter-orbital relatively wide (38.6-44.8 % HL); nostrils of moderate length and not visible from ventral view; pelvic fins moderately short (8.9-10.8 % SL); caudal peduncle relatively shallow (7.2–8.1 % SL), it is longer than length of caudal fin, the flanges moderately developed and longish, reaching to or anteriorly past distal end of adpressed anal fin rays; dorsal midline is usually quite broadly flat anteriorly from above pelvic fin bases; raised laminae on ventral surface of paired fins is sometimes evident though not strongly developed; gill rakers short and stout; no pyloric caecae; anal fin origin often under 0.53 distance posteriorly along dorsal fin base; no distinct black bars along lateral line (Ref. 98815).
Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. It is the only species found within its restricted range. It is recorded from a cool, clear flowing, heavily shaded and shallow (0.5 m) freshwater river, 3-5 m wide, with a substrate of sand, silt and clay, and areas of cobble and pebble. The instream cover was provided by logs, branches and bank and vegetation overhang, and pools ranged from 1-2 m in depth. It was recorded at densities of 0.15-0.18 fish/m2 and was collected with the native species Shortfinned Eel and East Gippsland Spiny Crayfish (Ref. 98815).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Raadik, T.A., 2014. Fifteen from one: a revision of the Galaxias olidus Günther, 1866 complex (Teleostei, Galaxiidae) in south-eastern Australia recognises three previously described taxa and describes 12 new species. Zootaxa 3898(1):001-198. (Ref. 98815)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Mais informação
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ReferênciasAquaculturaPerfil para aquaculturaEstirpesGenéticaElectrophoresesHereditariedadeDoençasProcessamentoNutrientsConversão de massa
ColaboradoresFotosStamps, Coins Misc.SonsCiguateraVelocidadeTipo de nataçãoÁrea branquialOtólitosCérebrosVisão
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Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00205 - 0.01170), b=3.12 (2.91 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
