Rhabdolichops navalha

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Rhabdolichops navalha Correa, Crampton & Albert, 2006

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drawing shows typical species in Sternopygidae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Gymnotiformes (Knifefishes) 電鰻目 (Knifefishes) > Sternopygidae (Glass knifefishes) 胸肛魚科 (Glass knifefishes)
Etymology: Rhabdolichops: Greek, rhabdos = stick + Greek, dolichos = long (Ref. 45335).

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

; 淡水 底中水層性; 深度上下限 5 - 10 m (Ref. 55969).

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

South America: Brazil.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 16.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 55969)

簡短描述 型態特徵 | 形態測量圖

Diagnosis: Distinguished from its congeners by the following unique characters: an unusual electric organ (EO) morphology in which the posterior EO margin ends abruptly and is replaced by rigid and transparent non-electrogenic tissue in the posterior, approximate one-half of the caudal appendage; very visible hemal spines in the posterior half of the caudal appendage; presence of 5 (vs. 6 or 7) pairs of pleural ribs; oral teeth conical, with diameter at base more than at midlength (vs. villiform, about as wide at base as at midlength in all congeners; cleithral posterior process broad (vs. narrow in all congeners). Also, it differs from its congeners, except with R. stewarti, in possessing non-ossified gill rakers, and except R. electrogrammus and R. caviceps, in possessing a distinct "black cap" (dense region of dark chromatophores in the parietal region) (Ref. 55969).
鑑別: 與它的同類區分了藉由跟隨獨特的特徵: 罕見的發電器 (EO) 形態學在那一個後面的 EO 邊緣突然地結束而且在後面的中被硬而透明的非 electrogenic 組織取代, 大約的尾鰭附肢的一半; 在尾鰭附肢的後半段中的非常看得見的血液棘; 有 5(vs.6 或 7) 對胸膜的肋骨; 口部的齒錐形, 在基底有直徑以在身體中央是超過 (vs. 絨毛狀的, 大約當寬的在基底當在所有的同類中的身體中央; 匙骨在後部突起寬的.(vs. 狹窄的在所有的同類中) 同時, ，除了 R. stewarti 以外，它有別於它的同類, 在持有非鈣化的鰓耙方面, 與除了 R. electrogrammus 與 R. caviceps 以外, 在持有一頂明顯的 " 黑色的無邊帽 "(深色色素胞的密集區域在腔壁的區域中) 方面.(參考文獻 55969)

生物學特性     字彙 (例如 epibenthic)

This species is known only from the main channel of the low-nutrient blackwater Rio Tefé. Apparently, the species is a benthic specalist. It is captured in trawl nets where it occurs with Rhabdolichops eastwardi, troscheli, caviceps, nigrimans, and electrogrammus, except lundbergi. Its diet consists of small planktonic crustacean primarily Cladocera and Copepoda, but also small Conchostraca and Ostracoda (Ref. 55969).

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


主要參考資料 Upload your references | 參考文獻 | 合作者 : Albert, James S. | 合作者

Correa, S.B., W.G.R. Crampton and J.S. Albert, 2006. Three new species of the neotropical electric fish Rhabdolichops (Gymnotiformes: Sternopygidae) from the central Amazon, with a new diagnosis of the genus. Copeia 2006(1):27-42. (Ref. 55969)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.2   ±0.31 se; based on food items.
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).