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> Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias:Greek, galaxias, ou = a kind of fish (Ref. 45335); supremus:Name from Latin 'supremus', meaning highest, uppermost, referring to this species being found at the highest elevation of all the Galaxiidae, at over 2000 m asl on Mount Kosciuszko, Australia’s
highest mountain.
Environment: milieu / Zona climática / intervalo de profundidade / distribution range Ecologia
; Água doce bentopelágico; não migratória; intervalo de profundidade 0 - 1 m (Ref. 98815). Subtropical
Maturidade: Lm? range ? - ? cm Max length : 9.6 cm FL macho/indeterminado; (Ref. 98815); peso máx. publicado: 8.00 g (Ref. 98815)
Descrição suscinta Chaves de identificação | Morfologia | Morfometria
Raios dorsais (total) : 9 - 11; Raios anais : 10 - 12; Vértebras: 52 - 58. This species is distinguished from its congeners within the Galaxias olidus complex by the following characters: pelvic fin with 8 segmented rays; mean vertebral count very high 57, with broad range (52-59); distinct subterminal mouth; dorsal, anal and pelvic fin origins are set far back along trunk (70.4-75.1, 74.8-80.2 and 49.7-55.6 % SL respectively); distance between pectoral and pelvic fin bases is long (27.8-35.7 % SL); body depth shallow (8.4-12.4 % SL), much greater through pectoral fin base (11.8-16.4 % SL) than that through vent; caudal peduncle is very short and shallow (10.0-12.7 and 6.3-8.9 SL respectively); caudal fin much longer (120 %) than caudal peduncle; snout long (26.7-34.9 % HL); eye small (13.1-20.7 % HL); nostrils short and not visible from ventral view; anal fin base short (8.7-10.9 % SL); dorsal and anal fins short (12.6-15.9 and 13.1-15.9 % SL respectively); dorsal midline usually flattened anteriorly from above or slightly posterior to pectoral fin bases; posterior extent of mouth about 0.8 eye diameter below ventral margin of eye; usually 2, occasionally 1; pyloric caecae of moderate length (4.6 % SL); gill rakers are short to moderately long; anal fin origin usually under 0.85 distance posteriorly along dorsal fin base (greatest setback in all members of the species complex); no distinct black bars along lateral line though, very occasionally, dark patches on dorsal midline may have a very small, black bar in the centre; and, distinctive, mottled colour pattern (Ref. 98815). Cross section: oval.
Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. Collected from cold and clear water in small flowing creeks (0.6-1.1 m average width, 0.1-0.2 m average depth, 0.5-0.6 m maximum depth) and from an on-stream lake (Blue Lake). All sites during winter are covered by snow and ice for an extended period of time. Substrate in the creeks consisted of bedrock, boulder, cobble, gravel and sand while the lake with cobble, pebble, gravel and silt.The fish is collected among rock, undercut banks and overhanging grasses in the creeks, mainly from pools. In Blue Lake, collected among small cobbles and from within 2 m of the shoreline (location and habitat in deeper water unknown). All sites without emergent or submerged aquatic vegetation or overhead shading. Collected at a density of 4.5 fish/m2 in Carruthers Creek, 2.5 fish/m2 along the edges of Blue Lake, and 1.5 fish/m2 in an inflowing tributary to Blue Lake. It is the only native fish species so far recorded from within its range, although Galaxias olidus is presumed to be present nearby. It is collected in Carruthers Creek with an unidentified native spiny crayfish Euastacus sp. (possibly E. rieki) (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: Version 2025-1)
Criticamente em perigo (CR) (A3bce; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)); Date assessed: 13 February 2019
Ecologia Trófica Food items (preys) Composição da dieta Consumo alimentar Food rations Predadores
Ecologia Ecologia
Home ranges
Population dynamics Parâmetros de crescimento Max. ages / sizes Length-weight rel. Length-length rel. Frequências de comprimento Conversão de massa Recrutamento Abundância
Life cycle Reprodução Maturidade Maturity/Gills rel. Fecundidade Desova Spawning aggregations Ovos Desenvolvimento dos ovos Larvas Dinâmica larval
Physiology Body composition Nutrients Consumo de oxigênio Tipo de natação Velocidade de natação Visual pigments Fish sound Diseases & Parasites Toxicity (LC50s)
Índice de diversidade filogenética (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00206 - 0.01165), 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). 🛈
