Teleostei (teleosts) >
Ovalentaria/misc (Various families in series Ovalentaria) >
Plesiopidae (Roundheads) > Acanthoclininae
Etymology: Acanthoplesiops: Greek, akantha = thorn + Greek, plesios = near + Greek, ops = similar (Ref. 45335); naka: Named for the first letters of the authors' childen's names, Nat, Nat, Aaron, Kelly, Adam..
More on authors: Mooi & Gill.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; pelagic-neritic; depth range 21 - 32 m (Ref. 75897). Tropical
Eastern Central Pacific: Tonga.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 1.0 cm SL male/unsexed; (Ref. 75897)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 18; Dorsal soft rays (total): 4; Anal spines: 7; Anal soft rays: 4; Vertebrae: 27. This species is characterized by the following: D XVIII,4; anterior dorsal-fin pterygiophore formula ?/?/I+I/I/I/I/I/I/I//I/I/I/I; dentary pores 3; intertemporal pores 2, generally brownish head and body with darker pigment spots (from shrunken melanophores), except the pale stripe from the anterior half of the symphyseal flap to origin of dorsal fin continuous with a pale first dorsal spine, pectoral fin base with a pale spot, pale caudal peduncle continuous with pale bases of last 3 segmented dorsal- and anal-fin rays, the median fins slightly darker than body color with pale tips to their rays, first pelvic-fin ray dark on proximal 2/3 and pale on distal third, second pelvic-fin ray dark except for extreme distal tip; scales ctenoid; last dorsal- or anal-fin rays no membranous attachment to caudal fin (Ref. 75897).
Collected off a deep slope with a near vertical coral wall with a sandy channel at its base, followed by a steep drop-off (Ref. 75897). Eggs are guarded by the male parent (Ref. 205).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Eggs are guarded by the male parent (Ref. 205).
Mooi, R.D. and A.C. Gill, 2004. Description of a new species of the fish genus Acanthoplesiops Regan (Teleostei: Plesiopidae: Acanthoclininae) from Tonga. Zootaxa 432:1-10. (Ref. 75897)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.6 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
