Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Sicydiinae
Etymology: Stiphodon: Greek, stiphos, -eos, -oys = mass + Greek, odous = teeth (Ref. 45335); alcedo: Named from the Latin alcedo, meaning kingfisher, as the metallic turquoise on the head and body and the orange around the belly of the nuptial coloured male is similar to the plumage of the kingfisher, Alcedo atthis. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal; amphidromous (Ref. 131349). Subtropical
Asia: Okinawa Island and Iriomote Island of the Ryukyu Archipelago, Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm 2.9, range 3 - 3 cm
Max length : 4.3 cm SL male/unsexed; (Ref. 90212); 4.8 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 7; Dorsal soft rays (total): 9 - 10; Anal spines: 1; Anal soft rays: 10; Vertebrae: 25 - 27. Distinguished from its congeners by having the following characters: dorsal fins, usually VI-I, 9, male having pointed, but not filamentous, first dorsal fin with elongate spines 4 and 5, posterior tip of fin usually extending to base of soft-rays 2-5 of second dorsal fin; pectoral fin with 15-17 (mode 16) rays; 32-40 premaxillary teeth; dentary with 32-45 horizontal teeth; female with two black longitudinal bands laterally on body arranged with a larger interval between two bands; lower band composed of 8-11 regular blotches, upper band thin and pale; all fins of female usually with faint markings; non-nuptial colored male having a dark brown longitudinal band just below lateral midline; nuptial colored male lacking this band, and having blackish or sometimes orange body, metallic turquoise laterally on head, metallic turquoise spot on upper pectoral-fin base when alive; and male often with 1-6 somewhat obscure black spots on pectoral-fin rays (Ref. 90212).
Adults and juveniles inhabit freshwater streams, usually in pools. Often form shoals with conspecific individuals and the congeners Stiphodon percnopterygionus and Stiphodon atropurpureus, and occasionally with Stiphodon imperiorientis.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Maeda, K., T. Mukai and K. Tachinara, 2011. A new species of amphidromous goby, Stiphodon alcedo, from the Ryukyu Archipelago (Gobiidae: Sicydiinae). Cybium 35(4):285-298. (Ref. 90212)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
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).
