分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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Cypriniformes (Carps) >
Nemacheilidae (Brook loaches)
Etymology: Schistura: Greek, schizein = to divide + Greek, oura = tail; an allusion to forked caudal fins (Ref. 45335); paraxena: From the Greek παράξενος (paraxenos), mea which means strange, in reference to the species’ unusual
appearance. An adjective, Latinized (-us, -a, -um).
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. Subtropical
Asia: West River, Pearl River drainage in Guangxi, China.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 7.0 cm SL オス/雌雄の選別がない; (Ref. 115556)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 12; 臀鰭: 8; 脊つい: 37 - 39. Schistura paraxena differs from all species of Schistura by having conspicuous peduncular crests along its dorsal and ventral extremities and a plain beige body coloration consisting of crests brownish gray and a pale spot medially at caudal-fin base. It can be further distinguished by having the following characters: dorsal fin with 8½ branched rays; pectoral fin with 11-12 rays; pelvic fin with 9 rays; 37-38 vertebrae; predorsal length 50-52% SL; caudal-peduncle length 17-18% SL (88-92% HL; 5.6-5.8 times SL); lateral line complete; breast naked; predorsal area scaled; and upper lip not notched (Ref. 115556).
Body shape (shape guide): elongated.
Feeds on nymphs of the stonefly family Perlidae (Ref. 115556).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Endruweit, M., 2017. A new Schistura from the Pearl River in Guangxi, China (Teleostei: Nemacheilidae). Zootaxa 4277(1):144-150. (Ref. 115556)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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
系統多様性指数 (参照 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=0.00724 (0.00326 - 0.01610), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
回復力 (参照 120179) |
手段, 1.4年~4.4年の倍増期間の最小個体群 (Preliminary K or Fecundity.). |
漁業の脆弱性 (Ref. 59153) |
Low to moderate vulnerability (35 of 100). 🛈 |