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: Brotulinella: Name refers to Brotulina, now regarded as a junior synonym of Diancistrus, and the small size of the genus.; taiwanensis: Named for its type locality, Taiwan, ROC.. More on author: Schwarzhans, Nielsen.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 0 - 6 m (Ref. 90102). Subtropical
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Pacific: Taiwan and the Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm SL male/unsexed; (Ref. 57884)
Morphology | Morphometrics
(total): 68 - 78;
soft rays: 52 - 63;
Vertebrae: 40 - 43. The anterior nostril is placed low on snout; male copulatory organ with 2 pairs of pseudoclaspers, the outer large, broad and blade-like, the inner a mere fleshy appendix fused to the outer pseudoclasper anteriorly and without a supporter; eyes moderately large (1.8-2.6% SL); fish small (maximum 60 mm SL, maturity reached at 35 mm SL), slender (head height about 16% SL, depth at anal about 16.5% SL); precaudal vertebrae 12 (rarely 11); head with scale patch only on cheek; otolith elongate, its sulcus inclined (5-10°), short (otolith length to sulcus length 2.2-2.4), with fused colliculi; maxilla rounded postero-ventrally with weak knob in front of rear corner; anterior anal fin pterygiophore is long (Ref. 57884).
Occurs in shallow water between rocks, mainly in surge areas (Ref. 57884). Cryptic, solitary inhabitant of shallow water (<6m) (Ref 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005. Review of the Dinematichthyini (Teleostei, Bythitidae) of the Indo-West-Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museum and Art Galleries of the Northern Territory 21:73-163. (Ref. 57884)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 26.9 - 29.3, mean 28.8 (based on 764 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00175 - 0.01142), b=3.10 (2.88 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .