Classification / Names
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Beloniformes (Needle fishes) >
Zenarchopteridae (Internally fertilized halfbeaks)
Etymology: Nomorhamphus: Greek, nema = filament + Greek, rhamphos = bill, peak (Ref. 45335); lanceolatus: From the late Latin adjective lanceolatus, meaning lanceolate, in reference to the shape of the spiculus of the new species.
Environment: milieu / climate zone / profondeur / distribution range
Écologie
; eau douce pélagique; profondeur 0 - ? m. Tropical
Asia: Sungai Wawolambo in Sulawesi Tenggara, Indonesia.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 4.3 cm SL mâle / non sexé; (Ref. 97329); 5.4 cm SL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Rayons mous dorsaux (Total) : 11 - 13; Rayons mous anaux: 15 - 16; Vertèbres: 36 - 38. Nomorhamphus lanceolatus can be distinguished from all congeners by the combination of the following characters: lower jaw short; no fleshy lower jaw appendage in males; presence of black pigmentation in anal and dorsal fin; life coloration with yellow and orange colored anal, dorsal, and caudal fin, ventral surface of lower jaw orange and yellow belly; a lanceolate, dorsally slightly curved spiculus in the male andropodium, with the middle segments of the spiculus in contact with the distal tip of the third anal-fin ray; nine to ten segments proximal to spinae (mode nine segments); segments three or four to six or seven (mode four to seven) of second anal-fin ray in males with a dorsal and a ventral row of 'subsegments' forming small squares and rectangles of different sizes, so that these segments seem to be subdivided; third anal-fin ray slightly constricted longitudinally, giving the appearance of two distinct rays, distal part of this ray is slightly curved ventrally to contact spiculus (Ref. 97329).
Occurs in a stream of about 7-9 m wide and 50 cm deep, partially shaded by forest canopy, with a bed of sand and gravel (Ref. 97329).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Huylebrouck, J., R.K. Hadiaty and F. Herder, 2014. Two new species of viviparous halfbreaks (Atherinomorpha: Beloniformes: Zenarchopteridae) endemic to Sulawesi Tenggara, Indonesia. Raffles Bulleting of Zoology 62:200-209. (Ref. 97329)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-1)
Menacé (EN) (B1ab(iii)); Date assessed: 17 January 2020
Menace pour l'homme
Harmless
Utilisations par l'homme
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00200 - 0.01044), b=3.03 (2.82 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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