分類 / 名前
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Gobiiformes (Gobies) >
Microdesmidae (Wormfishes) > Ptereleotrinae
Etymology: Ptereleotris: Greek, pteron = wing, fin + The name of a Nile fish, eleotris (Ref. 45335); randalli: Named for John E. Randall.
Eponymy: Dr John ‘Jack’ Ernest Randall Jr. [...] (Ref. 128868), visit book page.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 関連する礁; 深さの範囲 8 - 70 m (Ref. 84213). Tropical
Southwest Atlantic: endemic to Brazil.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 8.7 cm SL オス/雌雄の選別がない; (Ref. 84213); 4.9 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) : 22 - 24; 肛門の骨: 1; 臀鰭: 21 - 23. This species is distinguished from its Atlantic congeners by having the following characters: dorsal and anal fins with bright orange-yellow submarginal bands; second dorsal and anal fins comparatively low, slightly elevated anteriorly; short caudal fin, 5ht and 6th rays prolonged as filaments; short pelvic fins, about the same length as pectorals (Ref. 84213).
Body shape (shape guide): elongated.
Used in the aquarium trade under the name Opistognathus leitoso. The population is declining fast in some areas of the Brazilian coast (mainly off the States of Espirito Santo and Bahia) due to commercial exploration of the calcareous algae banks. This species hovers over its burrow feeding on plankton and dives headfirst in to the burrow when threatened. Found usually over sandy bottom close to reefs, but also common over sand patches as small as 10 cm in diameter, enclosed by rocky areas or in calcareous algae (Lithothamnion sp.) banks (Ref. 84213). Maximum depth from Ref. 126840.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Gasparini, J.L., L.A. Rocha and S.R. Floeter, 2001. Ptereleotris randalli n. sp., a new dartfish (Gobioidei: Microdesmidae) from the Brazilian coast. aqua, J. Ichthyol. Aquat. Biol. 4(3):109-114. (Ref. 84213)
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: 商業; 水族館・水槽: 商業
用具
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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
好ましい温度 (参照
123201): 24.6 - 27.6, mean 27.2 °C (based on 58 cells).
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).
栄養段階 (参照
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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