| 词条 | Rhamphichthys |
| 释义 |
| name = Rhamphichthys | image = Rhamphichthys marmoratus.jpg | image_caption = Rhamphichthys marmoratus | regnum = Animalia | phylum = Chordata | classis = Actinopterygii | ordo = Gymnotiformes | familia = Rhamphichthyidae | genus = Rhamphichthys | genus_authority = J. P. Müller & Troschel, 1846 }}Rhamphichthys is a genus of South American sand knifefishes found in the Amazon, Orinoco, Río de la Plata and Paranaíba basins, as well as rivers in the Guianas.[1] They are found along vegetated edges or near the bottom of rivers;[1] they are often quite common in deep river channels.[2] Rhamphichthys feed on small invertebrates. Little else is known about their behavior, but observations in aquariums indicate that they are nocturnal.[1] They have a relatively long slender snout and depending on the exact species reach up to {{convert|26.5-100|cm|ft|abbr=on|1}} in total length.[1][3] SpeciesThere are currently 10 recognized species in this genus:[3]
References1. ^1 2 3 {{cite book | editor1=van der Sleen, P. | editor2=J.S. Albert | year=2017 | title=Field Guide to the Fishes of the Amazon, Orinoco, and Guianas | publisher=Princeton University Press | page=340 | isbn=978-0691170749 }} {{Taxonbar|from=Q3429237}}{{Gymnotiformes-stub}}2. ^1 Carvalho, T.P. & Albert, J.S. (2015): A New Species of Rhamphichthys (Gymnotiformes: Rhamphichthyidae) from the Amazon Basin. Copeia, 103 (1): 34-41. 3. ^1 {{FishBase genus | genus = Rhamphichthys| month = December | year = 2017}} 5 : Rhamphichthyidae|Fish of South America|Freshwater fish genera|Taxa named by Johannes Peter Müller|Taxa named by Franz Hermann Troschel |
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