分类 / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
; 淡水 底中水层性; pH range: 6.0 - 6.8; dH range: 8 - ?; 非迁移的. 熱帶; 23°C - 28°C (Ref. 13614)
South America: Atlantic coastal river basins in Brazil.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 36579)
型态特徵 | 形态测量图
背的软条 (总数): 12-18; 臀鳍软条: 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).
Found in seasonal pools as well as river floodplains (Ref. 96072). Bottom spawner, 4 months incubation. Is difficult to maintain in aquarium (Ref. 27139).
底部产卵鱼， 4 个月孵育时间。 在水族馆是难以维持。 (参考文献 27139)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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)
CITES (Ref. 118484)
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00397 - 0.01999), b=3.14 (2.94 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
营养阶层 (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
回复力 (Ref. 120179
): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
脆弱性 (Ref. 59153
): Low vulnerability (10 of 100) .