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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); fontaneus: The specific epithet comes from the Latin adjective fontaneus, meaning of or from a spring, in reference to the nature of a type locality (a spring-fed stream).
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة قاعية التغذية و المعيشة; pH range: 6.8 - ?; نطاق العمق 0 - 2 m (Ref. 80541). Tropical; 2°S - 3°S, 102°E - 103°E
Asia: Indonesia. Presently known only from the type locality in the Batang Hari drainage in central Sumatra (Ref. 80541).
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 2.4 cm SL ذكر/ مختلط الجنس; (Ref. 80541)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 1; الأشعة الظهرية الناعمة (المجموع) : 5; شوكة شرجية: 3; أشعه شرجية لينه: 7; فقرات: 33. Akysis fontaneus is distinguished from congeners by a combination of the following characters: weakly emarginate caudal fin, convex dorsal surface of neurocranium making predorsal profile appear steeply sloping, presence of 4 large serrations on posterior edge of pectoral spine that are more than half width of spine, predorsal length 34.5% SL, pectoral-fin length 21.7% SL (not reaching pelvic-fin origin), length of adipose-fin base 18.7% SL and interorbital distance 42.3% HL (Ref. 80541).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Ng, H.H., 2009. Akysis fontaneus, a new species of catfish (Siluriformes: Akysidae) from Sumatra. Zootaxa 1973:41-50. (Ref. 80541)
IUCN Red List Status (Ref. 130435: Version 2024-1)
استخدامات بشرية
أدوات
تقارير خاصة
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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=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
