Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Rhamphichthyidae (Sand knifefishes)
Etymology: Rhamphichthys: Greek, rhamphos = bill, peak + Greek, ichthys = fish (Ref. 45335); drepanium: drepanium to refer to the sickle-shaped pattern of the upper part of the oblique transversal dark bars of the body (Ref. 35403).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Amazon, and Orinoco basins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm SL male/unsexed; (Ref. 35403)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Dorsal soft rays (total): 0. Swim-bladder in adults reduced to a small narrow tube-like body generally thick-walled; oblique transversal dark bars interrupted dorsally, not crossing or reaching the sagittal line, the upper extremities of these bars being widened resembling the form of a small sickle. Anal fin rays 308-417; no caudal fin (Ref. 30543).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Tools
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