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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.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce; saumâtre benthopélagique. Tropical
Asia: Kola Island in Aru Islands, Indonesia.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 7.9 cm SL mâle / non sexé; (Ref. 110723); 6.5 cm SL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 4 - 6; Rayons mous dorsaux (Total) : 12 - 13; Épines anales: 1; Rayons mous anaux: 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).
Body shape (shape guide): fusiform / normal.
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).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: d'intérêt potentiel; Aquarium: potentiel
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Niveau trophique (Réf. 69278) |
2.9 ±0.4 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |