Teleostei (teleosts) >
Mulliformes (Goatfishes) >
Mullidae (Goatfishes)
Etymology: Parupeneus: Latin, parum, parvum = small + Peneus, the name of a river; williamsi: Named for Dr. Jefrey T. Williams (USNM).
Eponymy: Dr Jeffrey Taylor ‘Jeff ’ Williams is Collection Manager, Ichthyology, USNM. [...] (Ref. 128868), visit book page.
Issue
Common name corrected from Williams's goatfish in FishBase and William's goatfish in Ref. 130857 to Williams' goatfish (Ref. 128868).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 6 - 30 m (Ref. 123210). Tropical
Eastern Central Pacific: French Polynesia, endemic to Marquesas Is.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 23.4 cm SL male/unsexed; (Ref. 123210)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 8; Dorsal soft rays (total): 9; Anal soft rays: 7. This species is distinguishec by the following characters: barbels are white to yellowish distally, with the tips usually extending beyond posterior margin of preopercle; upper jaw somewhat slender and shorter in specimens that are greater than 5.0 cm SL (upper-jaw length times maxillary depth 60.5-96.9%, mean 74.4% of SL]; second anal-fn soft ray is long, its length 47.2-55.2% (51.3%) of caudal-fn length; 2-3 very indistinct blackish vertical bands on trunk, the frst located under frst dorsal fin (most indistinct, sometimes absent), the second below inter-dorsal-fin space and the third below anterior part of second dorsal fin; a very indistinct blackish
saddle on upper caudal peduncle; dense melanophores uniformly distributed on the anal-fin membranes in most preserved specimens (Ref. 123210).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Shibuya, S. and H. Motomura, 2021. Parupeneus williamsi, a new species of goatfish (Perciformes: Mullidae) endemic to the Marquesas Islands, French Polynesia. Ichthyological Research 68(1):11-20. (Ref. 123210)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00543 - 0.02542), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (19 of 100).
![Image of Parupeneus williamsi (Williams\](/images/thumbnails/jpg/tn_Pawil_u2.jpg "Image of Parupeneus williamsi (Williams\")
