Classification / Names
ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa
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Galaxiiformes (Southern smelts) >
Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxiella: Greek, galaxias, ou = a kind of fish, diminutive (Ref. 45335); toourtkoourt: The specific name is derived from the Australian indigenous language groups Tjapwurrung, Korn Kopan noot, and Peekwurrung, meaning 'little fish in freshwater'.
Environment: milieu / climate zone / ລະດັບຄວາມເລິກ / distribution range
ນິເວດວິທະຍາ
; ນ້ຳຈືດ; ນ້ຳກ່ອຍ ອາໄສຢູ່ໃກ້ໜ້າດິນໃຕ້ພື້ນທ້ອງນ້ຳ; pH range: 5.3 - 9.3; ບໍ່ມີການເຄື່ອນຍ້າຍ. Tropical; 5°C - 27°C (Ref. 104902)
Oceania: southeastern mainland Australia from the upper Barwon River system near Barwon Downs, Victoria, west to the Cortina Lakes, near the Coorong, South Australia.
ຂະໜາດ / ນ້ຳໜັກ / Age
ການຈະເລີນເຕັມໄວ: Lm ? range ? - ? cm
Max length : 3.4 cm TL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 104902); 4.2 cm TL (female)
Short description
ຕົວທີ່ໃຊ້ໃນການຈຳແນກຊະນິດ | ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…
ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 5 - 8; ຄີກົ້ນຂອງປາ: 7 - 10; ສັດທີ່ມີກະດູກສັນຫຼັງ: 34 - 38. Galaxiella toourtkoourt can be diagnosed from other congeners by following characters: caudal fin rays usually 13 (12-15); anal fin rays usually 8 (7-10); pectoral fin rays usually 12 (8-13); usually 36 (34-38) vertebrae; and 7 laterosensory pores in the preopercular-supramaxillary series. Adults very small (usually 2.06-3.06 cm SL in females; 1.67-2.40 cm SL in males); short caudal peduncle usually 19.6-21.9 % SL (17.2-23.8 % SL in females; 17.9-24.4 % SL in males); origin of dorsal fin more or less in line with anal fin (particularly females) with horizontal distance between dorsal fin and anal fin origins usually 0.0-2.7 % SL (2.5-2.8 in females; 2.6-3.9 in males). Adults possess three longitudinal black stripes (easier to discern in adult males) and reduced markings on ventral surface (typically two to three black blotches at isthmus) (Ref. 104902).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Occurs in swamps, wetlands, shallow lakes, billabongs, small creeks and artificial earthen
drains at low elevation (mean 100 m above sea level, typically 22-176 m above sea level). Inhabits mostly shallow areas (mean maximum depth 1.1 m, typically 0.5-2.0 m), with still to low water velocities (or often backwaters in faster flowing conditions) and partial shading (mean 27 %, typically 5-50 % surface cover). Occasionally found in inland with slightly saline waters. Water quality measurements at the time of collection indicate this species can thrive in a broad range of conditions: water temperatures 5.2-26.9 °C; dissolved oxygen levels of 20-263 % saturation; pH of 5.3-9.3; water electrical conductivity of 94-13,620 μS/cm and turbidity of 1-96 NTU . Usually collected together with other native fish species, particularly Nannoperca australis (65 % frequency), Galaxias maculatus (12 % frequency), and burrowing crayfish (e.g. Engaeus spp., Geocharax spp.) (18 % frequency). Often found with introduced fish species Gambusia holbrooki (Ref. 104902).
Life cycle and mating behavior
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
Coleman, R.A., A.A. Hoffmann and T.A. Raadik, 2015. A review of Galaxiella pusilla (Mack) (Teleostei: Galaxiidae) in south-eastern Australia with a description of a new species. Zootaxa 4021(2):243-281. (Ref. 104902)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
ເຄື່ອງມື
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ແຫຼ່ງອີນເຕີເນັດ
Estimates based on models
Phylogenetic diversity index (ເອກະສານອ້າງອີງ
82804): PD
50 = 0.5625 [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).
ຊັ້ນເຂດຮ້ອນ (ເອກະສານອ້າງອີງ
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (ເອກະສານອ້າງອີງ
120179): ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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