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Galaxiiformes (Southern smelts) >
Galaxiidae (Galaxiids) > Galaxiinae
Etymology: Galaxias: Greek, galaxias, ou = a kind of fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة القاع. Temperate; 42°S - 43°S
Oceania: known only in Clarence Lagoon and tributaries and the upper reaches of the Clarence River, which is part of the Derwent River system of Tasmania, Australia.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 14.0 cm SL ذكر/ مختلط الجنس; (Ref. 44894); common length : 7.5 cm SL ذكر/ مختلط الجنس; (Ref. 5259); أعلا وزن تم نشرة: 20.00 g (Ref. 30189)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 10 - 12; شوكة شرجية: 0; أشعه شرجية لينه: 11 - 13; فقرات: 53 - 54. Scales completely absent (Ref. 30189). Dark brown dorsal surface, irregular dark brown bars and bands extending down sides, ventral surface yellow-cream in color (Ref. 30189).
Facultative air-breathing in the genus (Ref. 126274); Found in shelter of rocks and boulders in lacustrine habitats, also found in swamps and streams draining in and out of lakes (Ref. 44894). Adults occur in the rocky margin of Clarence Lagoon, its outlet stream and several tributaries that flow into the lake. Adults feed on benthic crustaceans while juveniles feed partly on planktonic crustaceans, and insects and their larvae (Ref. 30189, 44894). Very secretive species, darts for cover under boulders if disturbed. The entire life cycle (may live for up to four years) takes place in fresh water. Adults move into inlet streams to spawn in spring. The demersal eggs take about 2 months to hatch. Fry reside in open surface waters of the lake (Ref. 44894).
Oviparous. Spawn in spring (Ref. 30189).
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
IUCN Red List Status (Ref. 130435)
في خطر (EN) (B1ab(iii,iv)+2ab(iii,iv)); Date assessed: 11 February 2019
استخدامات بشرية
أدوات
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
مستوى غذائي (Ref.
69278): 3.2 ±0.40 se; based on food items.
المرونه (Ref.
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (tm=2; Fec=300).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
