Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Bythitidae
(Viviparous brotulas) > Brosmophycinae
Etymology: Nielsenichthys: Named for Jørgen Nielsen, Copenhagen, ZMUC, in recognition of his many contributions to the biology and systematics of the Ophidiiformes.; pullus: Name from the Latin 'pullus' meaning dark, referring to the dark colour of the fishes; adjectival.. More on author: Schwarzhans.
Environment / Climate / Range
Marine; benthopelagic; depth range 5 - 20 m (Ref. 88966). Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.8 cm SL male/unsexed; (Ref. 88966)
Morphology | Morphometrics
soft rays: 59 - 67;
Vertebrae: 42 - 43. This species is distinguished by the following set of characters: anterior nostril placed high on snout (nearly half the distance from upper lip to anterior margin of eye); male copulatory organ with 2 pairs of equally large pseudoclaspers connected by thin ligament; pseudoclaspers slender, each with single straight supporter, inner pseudoclasper positioned anterior of outer pseudoclasper; precaudal vertebrae 12; rays on dorsal fin 84-90 and anal fin 59-67; head with scale patch on cheek only, no scales on operculum; upper preopercular pore present; maxilla expanded postventrally; otolith elongate (length to height 2.2-2.3), colliculi separated, ostium approaching close to anterior rim of otolith, ostium length to caudal length 3.3-3.8; size small, up to about 40 mm SL (Ref. 88966).
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Pacific: Indonesia.
Cryptic, solitary inhabitant of rocky crevices (Ref. 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schwarzhans, W. and P.R. Møller, 2011. New Dinematichthyini (Teleostei: Bythitidae) from the Indo-west Pacific, with the description of a new genus and five new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 27:161-177. (Ref. 88966)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00177 - 0.01179), b=3.10 (2.88 - 3.32), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .