分類 / Names
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Gymnotiformes (Knifefishes) >
Rhamphichthyidae (Sand knifefishes)
Etymology: Rhamphichthys: Greek, rhamphos = bill, peak + Greek, ichthys = fish (Ref. 45335); atlanticus: atlanticus to indicate that the Pindaré-Mearim river system delivers directly to the Atlantic Ocean, not to other larger drainage..
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: known only from the type locality, Viana Lake, Pindaré-Mearim river system in Brazil.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 67.3 cm SL オス/雌雄の選別がない; (Ref. 35403)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 0. Anal fin uniform light brown, not hyaline, without dark bars or lines or any other kinds of marks on it. Membranous, wide swim-bladder, with visceral organs overlapping it laterally in part or completely. No caudal fin (Ref. 35403).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Triques, M.L., 1999. Three new species of Rhamphichthys Müller et Troschel, 1846 (Ostariophysi: Gymnnotiformes: Rhamphichthyidae). Rev. Fr. Aquariol. 26(1-2):1-6. (Ref. 35403)
Human uses
用具
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00263 (0.00101 - 0.00685), b=3.05 (2.82 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (53 of 100).