Classification / Names
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Gymnotiformes (Knifefishes) >
Sternopygidae (Glass knifefishes)
Etymology: Rhabdolichops: Greek, rhabdos = stick + Greek, dolichos = long (Ref. 45335); lundbergi: Named for John G. Lundberg for his contributions to the study of gymnotiform and other Neotropical fishes..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce benthopelagico; distribuzione batimetrica 10 - 18 m (Ref. 55969). Tropical
South America: Brazil.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 24.1 cm TL maschio/sesso non determinato; (Ref. 55969); 17.5 cm TL (female)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Diagnosis: Distinguished from it congeners (except R nigrimans) by the presence of long pectoral fins (P1/HL = 124.0 ± 9.7 vs. 60-100), with chromatophores generally restricted to the distal portions of the fin rays, creating a dark tip. Differs from R nigrimans by smaller adult body size; shorter caudal appendage with absence of sexual length dimorphism; smaller teeth on premaxilla, mesopterygoid, and dentary; and less numerous teeth on the premaxilla (18-20 vs. 20-25), mesopterygoid (8 vs. 11-13), and dentary (1213 vs. 25-34; n = 2 adults for each species) (Ref. 55969).
This species is common in the main channel of the whitewater rivers of the Tefé region where it was found both in trawl-net samples at depths of 10-18 m and also, very abundantly, on sandy and muddy beaches sampled with seine nets. It occurs with R. eastwardi, caviceps, and electrogrammus, but not with nigrimans or navalha. The preferred habitat of this species is turbid river water with electrical conductivity in the range of 80-150 µScm-1. Mature males and females were found during the rising water phase of the Amazon River and were encountered among many other immature specimens on beaches. There in no information about the breeding habits of this species. Feeds on aquatic invertebrates-mainly larvae of Trichoptera and Ephemeroptera larvae, also of Coleoptera and Chironomidae. Some specimens had also ingested large amounts of adult Conchostraca (Ref. 55969).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
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 Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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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=0.01000 (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).
Trophic level (Ref.
69278): 3.3 ±0.42 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (14 of 100).
