Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Pleuronectiformes (Flatfishes) >
Soleidae (Soles)
Etymology: Leptachirus: Name from the Greek 'leptos' meaning thin and the soleid genus Achirus Lacepède, in reference to the very thin and slender body of the species; robertsi: Named for Tyson R. Roberts who collected the holotype and most of the paratypes.
Eponymy: Dr Tyson Royal Roberts (d: 1940) is an American naturalist and evolutionary biologist who has devoted most of his life to studying biodiversity, particularly that of fishes, throughout the tropics. [...] (Ref. 128868), visit book page.
More on author: Randall.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; depth range 0 - 1 m (Ref. 84817). Tropical
Oceania: Papua New Guinea.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.1 cm SL male/unsexed; (Ref. 84817)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 66 - 74; Anal soft rays: 50 - 57; Vertebrae: 38 - 40. This species is distinguished by the following characters: D 66-74; A 50-57; pelvic rays 4; lateral line on ocular side of head with a ventral branch of 5-7 pored scales, remaining horizontal anterior part with 4-5 pored scales; lateral-line scales to point of branching on head 78-87, including 8-9 anterior to upper end of gill opening; vertebrae 38-40; dorsal pterygiophores anterior to fourth neural spine 8-9; body slender, depth 3.0-3.15 in SL; head length 4.0-4.25 in SL; no caudal-peduncle; eye diameter 5.7-8.1 in HL; least vertical interorbital width 11.2-26.0 in HL; scales of body of adults with 8-12 cteni (mostly 9 or 10); longest dorsal ray 1.8-2.15 in HL; caudal fin 3.8-4.3 in SL; origin of pelvic fins adjacent on ventral edge of body, the fins attached posteriorly to base of anal papilla; short pelvic fins, reaching base of first anal ray, 2.7-2.9 in HL; ocular side brown, finely mottled with darker brown, with 3 longitudinal rows of dark brown spots of eye size or smaller, one below dorsal fin, one above anal fin, and one along lateral line; dorsal and anal fins dusky yellowish with the rays more heavily pigmented, some with sections in outer part still darker; basal scaled part of caudal fin colored like body, the rest of fin pale yellowish with scattered faint small dark spots (Ref. 84817).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., 2007. Leptachirus, a new soleid fish genus from New Guinea and northern Australia, with descriptions of eight new species. Records of the Western Australian Museum 24:81-108. (Ref. 84817)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00466 - 0.02049), b=3.07 (2.90 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±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).
![Image of Leptachirus robertsi (Robert\](/images/thumbnails/gif/tn_Lerob_f0.gif "Image of Leptachirus robertsi (Robert\")
