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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Sicydiinae
Etymology: Stiphodon: Greek, stiphos, -eos, -oys = mass + Greek, odous = teeth (Ref. 45335); niraikanaiensis: Named after the okinawan mythical place, Niraikanai, and Latin suffix ensis.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性; 両側回遊性; 深さの範囲 ? - 1 m (Ref. 95104). Subtropical
Northwestern Pacific: Japan.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 3.7 cm SL オス/雌雄の選別がない; (Ref. 104909); 3.6 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 7; 背鰭 (合計) : 9; 肛門の骨: 1; 臀鰭: 10. This species is distinguished by the following set of characters: D2 9, first dorsal fin pointed with elongate fourth spine in male; pectoral-fin rays 16; premaxilla 46-50 tricuspid teeth; dentary 4 (male) or 1 (female) symphyseal teeth and 40-46 unicuspid horizontal teeth in 2.7-3.6 cm SL; scales in longitudinal row 30-32; nape and posterior half of occipital region with cycloid scales; males without white patch behind pectoral-fin base and a broad black band along distal margin of second dorsal fin, the lateral side of body and dorsal and caudal fins often tinged with vivid orange; females with 11 or 12 dusky transverse bars laterally on trunk and tail, intersecting with the mid-lateral longitudinal band and has several conspicuous black spots on each of the spines and soft rays on the first and second dorsal, and caudal fins; anal fin lacking remarkable marking; pectoral-fin rays with 2-5 and 1-4 black spots, respectively, for male and female (Ref. 95104).
Body shape (shape guide): elongated; Cross section: oval.
The species was observed in a small pool less than 1 m deep and a rapid just below the pool, located 1.5 km from the stream mouth, no major barrier to upstream migration between the stream mouth and this site. The individuals were often shoaled with the abundant S. percnopterygionus and observed scratching on the rock surface for feeding with them. Single individuals of S. atropurpureus and S. multisquamus were also observed at the same site. Other abundant fishes found on the site were amphidromous gobies, such as Sicyopterus japonicus (Tanaka 1909), Awaous melanocephalus (Bleeker 1849), Rhinogobius nagoyae Jordan and Seale 1906, and Tridentiger kuroiwae Jordan and Tanaka 1927, amphidromous pipefish, Microphis leiaspis (Bleeker 1854), and catadromous flagtail, Kuhlia marginata (Cuvier 1829) (Ref. 95104).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Maeda, K., 2014. Stiphodon niraikanaiensis, a new species of sicydiine goby from Okinawa Island (Gobiidae: Sicydiinae). Ichthyol. Res.61(2):99-107. (Ref. 95104)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 興味がない
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [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).
回復力 (参照
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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