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: Eusurculus: Name from Latin and Greek 'eu' for good or real and Latin 'surculus' for grapevine tendril, refers to the functional analogy with the pseudoclaspers and the specific shape of the inner pseudoclasper.; pistillum: Name from Latin 'pistillum' for pistil, refers to the sucker-disk shape of the inner pseudoclasper, this resembles the shape of a flower’s pistil; noun in apposition.. More on author: Schwarzhans.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 9 m (Ref. 76869). Tropical
Indo-West Pacific: Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.9 cm SL male/unsexed; (Ref. 76869); 5.5 cm SL (female)
Morphology | Morphometrics
soft rays: 60 - 70;
Vertebrae: 43 - 47. This species possess the following distinguishing characters: D 80-92, A 60-70, D/A 25-32, V in D 2.1-2.4; vertebrae (12) 13-14+30-34=43-47, anterior nostril situated 1/3 to 1/3.5 distance from upper lip to aggregate distance to anterior margin of eye; free pseudoclaspers 2 pairs, outer pseudoclasper wing-shaped with broad base and distally widened supporter with indistinct anterior hook (covered by ligament), inner one stalked, with narrow base and distally with large, folded sucker-disk; cheek with 4-6 scale rows on upper part, 2-3 rows on lower; otoliths with distinct ostium and cauda, with colliculi separate or partly fused, otolith length to height is 2.2-2.4, ostial colliculum length to caudal colliculum length is 3-4 (Ref. 76869).
Collected from sublittoral area, with rocks, mud, corals and brown algae. It appears to be most common in reef environments, often on outer reefs, and avoid inshore and back reef areas (Ref. 76869).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schwarzhans, W. and P.R. Møller, 2007. Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-west Pacific. Part III. Beaglichthys, Brosmolus, Monothrix and eight new genera with description of 20 new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 23:29-110. (Ref. 76869)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24 - 29.4, mean 27.5 (based on 760 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00179 - 0.01169), b=3.10 (2.87 - 3.33), 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 (11 of 100) .