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Xenurolebias myersi (Carvalho, 1971)

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Xenurolebias myersi
Picture by Valdesalici, S.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 輻鰭魚綱 (條鰭魚) > Cyprinodontiformes (Rivulines, killifishes and live bearers) 鱂形目 (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) 溪鱂科 (Rivulines)

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 底中水層性; pH range: 6.0 - 6.8; dH range: 8 - ?; 非遷移的.   熱帶; 23°C - 28°C (Ref. 13614)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

South America: Atlantic coastal river basins in Brazil.
南美洲: 大西洋的海岸河流域。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 36579)

簡短描述 型態特徵 | 形態測量圖

背的軟條 (總數): 12-18; 臀鰭軟條: 19 - 23; 脊椎骨: 28 - 29. Xenurolebias myersi differs from all other congeners by having the caudal fin sub-lanceolate, never forming a distinctive tip posteriorly in larger individuals (vs. lanceolate, with a pronounced posterior tip) and distinctive light yellow spots on the distal portion of the anal fin in males (vs. light yellow narrow bars). It is also distinguished from X. cricarensis and X. izecksohni in having fewer dark brown bars on the caudal fin in males (4-6, vs. 7-10 in X. cricarensis and 9-12 in X. izecksohni); from X. izecksohni by having fewer dark grey bars on the flank in females (9-11 vs. 12-13), the dorsal fin, in males, with short light bars on the basal portion and small round light spots on the distal portion (vs. branching bars), absence of oblique short bars on the ventral portion of the caudal fin in males (vs. presence), deeper body (29.0-31.4% SL in males and 30.1-33.9% in females, vs. 27.1-28.5% and 28.5-30.6%, respectively), and longer lower jaw (22.4-24.5% of head length in males and 19.6-21.4% iin females, vs. 18.6-20.9% and 17.7-19.7%, respectively); and from X. pataxo in having wider head (71.5-74.6% SL in males and 74.5-81.1% in females, vs. 65.7-71.1% and 65.8-70.3%, respectively), shorter filaments on the dorsall fin in males (reaching between base and middle of the caudal fin, vs. reaching posterior portion of the caudal fin), and the presence of black spots on the posterior part of the caudal peduncle in females (vs. absence) (Ref. 96072).

生物學特性     字彙 (例如 epibenthic)

Found in seasonal pools as well as river floodplains (Ref. 96072). Bottom spawner, 4 months incubation. Is difficult to maintain in aquarium (Ref. 27139).

底部產卵魚, 4 個月孵育時間。 在水族館是難以維持。 (參考文獻 27139)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

南美洲: 大西洋的海岸河流域。

主要參考資料 Upload your references | 參考文獻 | 合作者 : Costa, Wilson J.E.M. | 合作者

Costa, W.J.E.M. and P.F. Amorim, 2014. Integrative taxonomy and conservation of seasonal killifishes, Xenurolebias (Teleostei: Rivulidae), and the Brazilian Atlantic forest. Systematic and Biodiversity (Ref. 96072)

IUCN 瀕危狀態 (Ref. 120744)

  未評估 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

水族館: 商業性
FAO(Publication : search) | FishSource |

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生態毒物學
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孕卵數

卵發育
年龄/大小
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網路資源

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00399 - 0.01990), b=3.14 (2.94 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.2   ±0.4 se; Based on size and trophs of closest relatives
回復力 (Ref. 69278):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
瀕危性 (Ref. 59153):  Low vulnerability (10 of 100) .