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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Sicydiinae
Etymology: Stiphodon: Greek, stiphos, -eos, -oys = mass + Greek, odous = teeth (Ref. 45335).
Eponymy: The binomial is a combination of the Latin words imperator (emperor) and orientis (of the east). This is a reference to Emperor Akihito of Japan (See Akihito). (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; eau douce; saumâtre benthopélagique; amphidrome. Subtropical
Asia: southern Japan and the mainland of South China, and probably appears in eastern Taiwan.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 5.0 cm SL mâle / non sexé; (Ref. 28731); 5.2 cm SL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 7; Rayons mous dorsaux (Total) : 9 - 10; Épines anales: 1; Rayons mous anaux: 10. This species is a large-sized Stiphodon with the pectoral fin spotted and sexual dimorphism obvious. Mature male with body grey or dark with iridescent blue/ green/ purple lateral bars (depending on viewing angle), snout and cheek iridescent blue/ green/ purple, first dorsal fin elongated and triangular, second dorsal fin with obvious spots (spots on first dorsal fin not obvious) and the female with two obvious transverse stripes on the body (Ref. 28731, 43239).
Body shape (shape guide): elongated.
Prefers to inhabit areas of boulders with a rock and gravel bottoms in clear streams (Ref. 28731) and mainly feed on epiphyte and biofilm on rocks in the wild. Due to its amphidromous nature, as known to occur with its congeners (adults live and breed in freshwater streams; larvae hatched drift downstream and develop in marine environments; juveniles return to freshwater streams), blockage of the migration pathway (e.g. construction of dam or culvert in streams) would cause a significant impact on this species. Ensuring no net loss of habitat, keeping the natural stream flow and maintaining the stream-ocean corridor are all essential for preserving this species (based on researches on its congeners; see Ref. 82683, 82684, 82685, 82689, 82690, 82692). Collection conducted by aquarium hobbyists (both private and commercial) also poses a serious threat to Stiphodon species in some regions (Ref. 82684) and this kind of activity should be strictly controlled (Ref. 82694).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Watson, R.E and I.-S. Chen, 1998. Freshwater gobies of the genus Stiphodon from Japan and Taiwan (Teleostei: Gobiidae: Sicydiini). aqua, J. Ichthyol. Aquat. Biol. 3(2):55-66. (Ref. 28731)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
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0 |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |