Nomorhamphus rex

Nomorhamphus rex Huylebrouck, Hadiaty & Herder, 2012

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drawing shows typical species in Zenarchopteridae.

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Beloniformes (Needle fishes) > Zenarchopteridae (Internally fertilized halfbeaks)
Etymology: Nomorhamphus: Greek, nema = filament + Greek, rhamphos = bill, peak (Ref. 45335);  rex: Name from Latin meaning king; referring to the teeth, similar to the dentition of the late Cretaceous Tyrannosaurus rex; noun in apposition..

Environment: milieu / climate zone / depth range / distribution range Οικολογία

; Γλυκού νερού Πελαγικό(ά); εύρος βάθους 0 - ? m. Tropical

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Asia: Indonesia.

Μέγεθος / Βάρος / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.4 cm SL αρσενικό/απροσδιόριστο; (Ref. 91778); 6.4 cm SL (female)

Short description Μορφολογία | Μορφομετρία

Μαλακές ραχιαίες ακτίνες (συνολικά): 11-13; Μαλακές εδρικές ακτίνες: 14 - 15; Σπόνδυλοι: 37 - 40. This species is distinguished from its congeners by the shape of the andropodium in males: sickle-shape spiculus is curved dorsally, the proximal and middle segments in contact with the distal tip of the third anal-fin ray; the spiculus' distal segments are curved ventrally, no contact to third anal-fin ray; in males, the second anal-fin ray with 3 or 4 segments proximal to paired spines, third or fourth segment with a dorsal and a ventral row of 'subsegments' forming squares and rectangles of different sizes, the third or fourth segment appears to be subdivided into two separate rays, from the half of its length up to the spines, with a varying number of subsegments (?5 subsegments per row); first segment of the first anal-fin ray slightly constricted longitudinally, giving the appearance of 2 distinct rays; third anal-fin ray composed of 2 elongate segments, each approximately half the length of the entire ray, followed by a few short segments at the distal tip, which contact the spiculus; the fourth anal-fin ray divided into 3 rows from approximately the third of its length, forming a kind of a covering for the third anal fin ray with one dorsal and two lateral rows beneath (Ref. 91778). Nomorhamphus rex have a relatively longer lower jaw, LJLB 5.7-11.3 times in SL vs. 13.4-15.9 in N. ebrardtii and 8.8-22.2 in N. kolonodalensis (Ref. 44897).

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Found in small, fast flowing river of few meters width that are partially covered by forest canopy, with gravel and sand bottoms. Occurs with Oryzias celebensis, Telmatherina cf. bonti, Anabas testudineus, Channa striata, Trichopodus pectoralis, Trichopodus pectoralis, Mugilogobius sp., Aplocheilus panchax, and Poecilia reticulata (Ref. 91778).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Huylebrouck, J., R.K. Hadiaty and F. Herder, 2012. Nomorhamphus rex, a new species of viviparous halfbeak (Atherinomorpha: Beloniformes: Zenarchopteridae) endemic to Sulawesi Selatan, Indonesia. The Raffles Bulletin of Zoology 60(2):477-485. (Ref. 91778)

IUCN Red List Status (Ref. 125652)

  Least Concern (LC) ; Date assessed: 29 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00183 - 0.00997), b=3.02 (2.81 - 3.23), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .