分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Osteoglossiformes
(Bony tongues) 骨舌魚目 (Bony tongues)
(Bonytongues) 巨鯡科 (Bonytongues)
Etymology: Arapaima: From tupí-guaraní, arapaima (Ref. 45335); leptosoma: Derived from the Greek leptos, meaning slender, and soma, meaning body. This in reference to the relatively slender body form of this species..
Environment: milieu / climate zone / depth range / distribution range
; 淡水 底中水層性.
South America: Solimões River in Brazil.
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 77.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 94273)
型態特徵 | 形態測量圖
背的軟條 (總數): 40; 臀鰭軟條: 38; 脊椎骨: 83. Diagnosed from all congeners by having the following characters: extremely slender dorsal most lateralis sensory cavity on preopercle, strongly angled ventrolateral margin of head where third infraorbital meets anterior limb of preopercle such that ventral surface of head is almost flat, and enlarged thickened sheath on anterior third of dorsal-fin base that hides anterior dorsal-fin rays when adpressed. Differs also from all other Arapaima except A. agassizii by having extremely long fourth infraorbital. Distinguished from A. arapaima and all other examined non-type specimens by having notably slender body; from A. mapae and A. agassizii by having relatively deep caudal peduncle (6.0% SL, vs. ,4.0 in both of latter two taxa); from A. gigas by having dentary teeth in a single row (vs. dentary teeth in 2-2.5 irregular rows); and from A. agassizii by having 28 teeth on maxilla (vs. 43) and on single ramus of dentary (30-32, vs. 44) (Ref. 94273).
Obligate air-breathing (Ref. 126274)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Stewart, D.J., 2013. A new species of Arapaima (Osteoglossomorpha: Osteoglossidae) from the Solimões River, Amazonas State, Brazil. Copeia 2013(3):470-476. (Ref. 94273)
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5938 [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 BS (Ref. 93245
營養階層 (Ref. 69278
): 3.3 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref. 120179
): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): High vulnerability (58 of 100).