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Gymnotiformes (Knifefishes) >
Rhamphichthyidae (Sand knifefishes)
Etymology: Rhamphichthys: Greek, rhamphos = bill, peak + Greek, ichthys = fish (Ref. 45335); heleios: The specific name heleios from the Greek meaning ‘‘dwelling in the marsh,’’ refers to the floodplain
habitats where this species has been collected.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal. Tropical
South America: Solimões and Amazon rivers in Brazil upstream of the mouth of the Madeira River; also from a single locality in the Guaporé River in Brazil.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm SL mannelijk / geslacht onbekend; (Ref. 99943)
Occurs mostly in floodplains of large rivers, where it is frequently collected together with Rhamphichthys drepanium and R. marmoratus.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Carvalho, T.P. and J.S. Albert, 2015. A new species of Rhamphichthys (Gymnotiformes: Rhamphichthyidae) from the Amazon basin. Copeia 103(1):34-41. (Ref. 99943)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00083 (0.00033 - 0.00213), b=3.10 (2.87 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (39 of 100).