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Gobiesociformes (Clingfishes) >
Gobiesocidae (Clingfishes and singleslits) > Diademichthyinae
Etymology: Discotrema: Greek, diskos = disc shape + Greek, trema = hole (Ref. 45335); nigrum: Named for its black colouration (head, eyes, body, belly, and fins are jet black, without any markings).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino pelagic-neritic; distribuzione batimetrica 5 - 20 m (Ref. 98449). Tropical
Western Pacific: Papua New Guinea.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 1.1 cm SL maschio/sesso non determinato; (Ref. 98449)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 9; Raggi anali molli: 7 - 8. This small species is distinguished by the following characters: D 9; A 7-8; pectoral-fin rays 22-23; principal caudal-fin rays 12; colouration plain black without white stripes; head short with head length 4.7-4.9 in SL and narrow with head width 7.5-8.5 in SL; anus posteriorly situated, with disc-to-anus distance 3.2-3.5 in SL; 3 rows of papillae distally on disc region B; 2 central papillae clusters on disc region B with only 2 papillae each (Ref. 98449).
Body shape (shape guide): elongated; Cross section: oval.
Collected on a crinoid, Oxycomanthus bennetti (Müller, 1841), black colour phase with green tentacles (family Comasteridae). Exact locality and depth where the species was collected unknown (due to confusion of station data) but was probably collected in a pass leading out of the lagoon, with a depth between 5 and 20 m. (Ref. 98449).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Fricke, R., 2014. Unguitrema nigrum, a new genus and species of clingfish (Teleostei: Gobiesocidae) from Madang, Papua New Guinea. J. Ocean Sci. Found. 13:35-42. (Ref. 98449)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
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Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5625 [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).
Livello trofico (Fonte Biblio.
69278): 2.8 ±0.2 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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