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Atheriniformes (Silversides) >
Melanotaeniidae (Rainbowfishes, blue eyes)
Etymology: Melanotaenia: Greek, melan, -anos = black + latin, taenia = stripe (Ref. 45335); kolaensis: Named for its type locaity, theKola Island.
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة; مياه مخلوطة قاعية التغذية و المعيشة. Tropical
Asia: Kola Island in Aru Islands, Indonesia.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL ذكر/ مختلط الجنس; (Ref. 110723); 6.5 cm SL (female)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 4 - 6; الأشعة الظهرية الناعمة (المجموع) : 12 - 13; شوكة شرجية: 1; أشعه شرجية لينه: 18 - 21. Melanotaenia kolaensis is distinguished by the following combination of characters: IV-VI-I,12-13 dorsal-fin rays; I,18-21 anal-fin rays; 13-14 (most frequently13) pectoral-fin rays; 33-34 (rarely 34) scales on lateral line, 14-16 predorsal scales; 17-23 cheek scales; 16-18 total gill rakers on first arch; greatest body depth of adult male 36.2 % SL; colour in life generally light blue to blue-green on back; dark blue midlateral stripe (1-2 scales wide), especially conspicuous on posterior third of body, edged below with prominent white to pale blue stripe that occupies lowermost part of caudal peduncle, extending forward to middle of sides; ventral portion of body greyish-white to pale blue except pair of dark blue, irregular stripes often present above anal fin and large, bright blue patch just behind and below pectoral-fin base; second dorsal, anal and caudal fins with reddish suffusion (Ref. 110723).
The type locality is located about 11 km upstream from the sea with the main river making a gradual transition from a broad, mangrove-lined tidal stream with brackish conditions to an exceptionally narrow and steep-walled, limestone channel in woodland habitat with pure fresh water. This species was found nearly 100 m beyond the navigable (via small outboard boat) limit of the stream (Ref. 110723).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Allen, G.R., R.K. Hadiaty, P.J. Unmack and M.V. Erdmann, 2015. Rainbowfishes (Melanotaenia: Melanotaeniidae) of the Aru Islands, Indonesia with descriptions of five new species and redescription of M. patoti Weber and M. senckenbergianus Weber. aqua, Int. J. Ichthyol. 21(2):66-108. (Ref. 110723)
IUCN Red List Status (Ref. 130435: Version 2024-2)
استخدامات بشرية
مصائد: غير ذات اهمية
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=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
