Classification / Names
Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinoptérygiens (poissons à nageoires rayonnées) >
Perciformes (Perch-likes) >
Dactyloscopidae (Sand stargazers)
Etymology: Gillellus: Theodore Nicolas Gill (1837-1914) researcher of abyssal fishes and systematics (Ref. 45335); jacksoni: Named after Felix N. Jackson, Museum Technician (GCRL), in partial recognition for his years of competent and willing performance of myriad ichthyological chores.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; marin dã©mersal; profondeur 0 - 17 m (Ref. 27742). Tropical
Western Central Atlantic: Anguilla, St. Barthélemy Island, Union Island, and Aruba.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 2.5 cm SL mâle / non sexé; (Ref. 27742)
Description synthétique
Morphologie | Morphométrie
Épines dorsales (Total): 17 - 20; Épines anales 2; Rayons mous anaux: 28 - 30. Common amongst Dactyloscopidae: Small, elongate fishes. Head usually broad and deep, body tapering and compressed behind. Eyes on top of head, often protrusible; mouth moderate to large, oblique to vertical; jaw teeth minute, in 2 or more series; no teeth on roof of mouth (vomer and palatines). Opercular opening large, gill membrane free from isthmus; opercles membranous, large, usually overlapping on underside of head, typically fringed above with 2 to 24 fleshy fimbriae. Dorsal fin continuous, with an isolated or semi-isolated anterior finlet, or with 1 to 5 separate anterior rays; dorsal-fin spines 7 to 23; anal-fin spines 2; dorsal and anal fins free or united to caudal fin by fragile membranes; pectoral fins broad-based, usually enlarged in mature males; caudal-fin rays simple or branched; pelvic fins under throat (insertion anterior to pectoral-fin base), with 1 spine and 3 thickened segmented rays; all other rays simple. Head and venter naked, body elsewhere with large cycloid scales (smooth to touch); lateral line high anteriorly, deflecting ventrally behind pectoral fin to continue along middle of side to caudal-fin base where terminal lateral-line scale bears ventrally directed canal. Body coloration, variably pale to strongly pigmented with white, brown, or reddish; some forms with characteristic saddle-like bars crossing back; others plain, mottled, or with indications of lateral stripes. Species distinguished by: dorsal-fin origin on nape; with an isolated or semi-isolated anterior finlet. Segmented caudal-fin rays usually 10. First preopercular canal not branched, with a single distal pore. Upper lip without fimbriae; lower lip fimbriae 2 to 4. Straight lateral-line scales 18 or 19; arched lateral-line scales 22 to 33 (Ref. 52855).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Dawson, C.E., 1982. Atlantic sand stargazers (Pisces: Dactyloscopidae), with description of one new genus and seven new species. Bull. Mar. Sci. 32(1):14-85. (Ref. 27742)
Statut dans la liste rouge de l'IUCN (Ref. 123251)
CITES (Ref. 118484)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intã©rãªt
Plus d'informations
Noms communsSynonymesMétabolismePrédateursÉcotoxicologieReproductionMaturitéFraiRassemblement de ponteFéconditéŒufsDéveloppement de l'œuf
Taille/ÂgeCroissanceLongueur-poidsLongueur-longueurFréquences de longueursMorphométrieMorphologieLarvesDynamique des populations larvairesRecrutementAbondance
RéférencesAquacultureProfil d'aquacultureSouchesGénétiqueFréquences alléliquesHéritabilitéPathologiesTraitementMass conversion
CollaborateursImagesStamps, Coins Misc.SonsCiguateraVitesseType de nageSurface branchialeOtolithesCerveauxVision
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Sources Internet
Estimates based on models
Preferred temperature (Ref.
115969): 27.3 - 28.5, mean 27.9 °C (based on 141 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois ().
Vulnérabilité (Ref.
59153): Low vulnerability (10 of 100) .
