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Galaxias terenasus Raadik, 2014

Roundsnout Galaxias
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drawing shows typical species in Galaxiidae.

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

> Galaxiiformes (Southern smelts) > Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335);  terenasus: Name from Latin 'teres', meaning rounded or smooth, and 'nasus' for nose, referring to the rounded snout of this species..

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

; Nước ngọt Sống nổi và đáy; không di cư; Mức độ sâu 0 - 1 m (Ref. 98815). Subtropical

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Oceania: Australia.

Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm ?  range ? - ? cm
Max length : 7.0 cm FL con đực/không giới tính; (Ref. 98815); Khối lượng cực đại được công bố: 3.00 g (Ref. 98815)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Các vây lưng mềm (tổng cộng) : 8 - 11; Tia mềm vây hậu môn: 10 - 13; Động vật có xương sống: 49 - 53. This species is the most distinctive species and is distinguished from its congeners in the Galaxias olidus complex by the following characters: diminutive size; long anterior nostrils, often visible anterio-laterally from ventral view; distinct body colour pattern and thin fins; low mean total pectoral fin segmented ray count of 13; low mean vertebral count of 51; the dorsal and ventral trunk profiles straight or nearly so; lateral snout profile usually rounded; body depth shallow through pectoral fin base (11.2-14.3 % SL); dorsal midline is usually flattened anteriorly from dorsal fin base; mouth small, usually reaching back to the anterior margin of eye with posterior extent of mouth about 0.4 eye diameter below ventral margin of eye; head and interorbital narrow (49.8-64.0 and 31.4-40.5 % HL, respectively), the head length greater than pelvic-anal distance; eye large (17.5-27.7 % HL and 45.7-73.3 % HD); gape is narrow (26.4-34.4 % HL and 48.7-64.2 % HW); snout, upper and lower jaws are short (17.6-29.8, 24.4-29.9 and 21.2-29.2 % HL, respectively); lower jaw about 95 (82.9-100.0) % length of upper; caudal peduncle is moderately long and longer than length of caudal fin; caudal peduncle flanges are moderately developed but short, usually not reaching to the adpressed anal fin; dorsal fin base short (7.1-11.6 % SL); distance between pelvic and anal fins is short (17.8-24.6 % SL); pelvic fin very short (6.3-11.2 % SL), only about 74.4 % of length of the pectoral fin; no raised lamellae from ventral surface of rays of paired fins; no accessory lateral line; anal fin origin usually under 0.42 distance posteriorly along the dorsal fin base; pyloric caecae 2 thin to moderately thick and long (5.1 % SL); gill rakers are short and stout; no distinct black bars along lateral line (Ref. 98815).

Sinh học     Tự điển (thí dụ epibenthic)

Facultative air-breathing in the genus (Ref. 126274); A freshwater fish that is unable to undertake diadromous migrations. Typically recorded from clear water in slow to moderately flowing creeks to large rivers (1.0-12.0 m average width and 0.1-0.6 m average depth), flowing through light to heavily forested (and shaded) catchments, consisting mainly of pools, glides and riffles with smaller areas of still backwaters. It is also recorded from modified streams in areas almost completely cleared for grazing. Substrate often consists of bedrock, boulder, cobble and coarse sand with smaller amounts of pebble, gravel and silt. Instream cover is typically provided by rock, timber debris, and smaller amounts of aquatic vegetation, leaf litter and bank and vegetation overhang. Average pool depth ranged from 0.2-1.8 m. It is collected at densities ranging from < 0.1-1.5 fish/m2 and found with other native fish species Shortfinned eel, Anguilla reinhardtii (Longfinned Eel), Retropinna sp. (Eastern smelt), and River Blackfish, native decapod crustaceans, Common Freshwater Shrimp, East Gippsland Spiny Crayfish and Variable Spiny Crayfish (Euastacus yanga), and a native bivalve mollusc (Hyridella sp.). Recorded with the alien species Brown Trout, though probably occupies a discrete micro-habitat (Ref. 98815).

Life cycle and mating behavior Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối : Berra, Tim M. | Người cộng tác

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)

IUCN Red List Status (Ref. 130435)

  Endangered (EN) (B1ab(i,ii,iii,iv)+2ab(i,ii,iii,iv)); Date assessed: 15 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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Trophic ecology
Các loại thức ăn
Diet compositions
Food consumptions
Food rations
Các động vật ăn mồi
Ecology
Sinh thái học
Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
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Egg(s)
Egg developments
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Distribution
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Anatomy
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Các nguồn internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Giống, Các loài | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Cây Đời sống | Wikipedia: Go, tìm | World Records Freshwater Fishing | Zoobank | Tạp chí Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
Mức dinh dưỡng (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref. 120179):  Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).