Classification / Names
Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk. Tropical
South America: Rio Japurá drainage, rio Solimões basin in Amazonas, Brazil.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL hane/ej könsbestämd; (Ref. )
Short description
Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt): 10; Mjukstrålar i analfenan: 21; Ryggkotor: 36 - 38. Boehlkea weitzmanican be distinguished from B. fredcochui by the following characters: complete lateral line (vs. incomplete); four rows of scales below lateral line (vs. three); a conspicuous vertically elongated humeral spot present (vs. a humeral spot absent); and 17-21 branched anal-fin rays (vs. 22-25). It can be diagnosed from B. orcesiby having 13-14 maxillary teeth (vs. 5-12), head length 27.9-29.9% (vs. 24.3-27.5% of SL), and color pattern consisting of black chromatophores in the basal half of dorsal fin, distal portion of pelvic fin, lower caudal-fin lobe and anal fin (vs. unpigmented fins) (Ref. 118101).
Occurs in small upland forest streams with 1.1-2.7 m width, 0.07-0.33 m depth, and 0.20-0.42 m/s) current velocity draining to both margins of the rio Japurá. The streams are characterized by the following: clear to yellowish; acidic (pH <6.6); cool (23.8-25.3°C); well oxygenated water (3.49-7.8 mg/l); low electrical conductivity (<33.3 μS/cm), almost completely shaded by the forest canopy; and channel substrate mainly consisted of white silica sand and pebbles, with interspersed litter banks. Occurs in the streams together with other fishes such as characids Bario steindachneri,
Bryconella pallidifrons, Hemigrammus bellottii, H. marginatus, Knodus orteguasae, Moenkhausia agnesae, Tyttocharax madeirae; lebiasinid Pyrrhulina semifasciata; heptapterid Nannoglanis fasciatus, and Myoglanis koepckei; cetopsids Denticetopsis seducta, and Helogenes marmoratus; rhamphichthyid knifefish Gymnorhamphichthys rondoni, and some cichlids Aequidens pallidus, and Bujurquina cf. robusta (Ref. 118101).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Soares, I.M., V.A. Bertaco, P.M.M. Ito and J. Zuanon, 2017. A new species of Boehlkea (Characiformes: Characidae: Stevardiinae) from the rio Japurá, Amazon basin, Brazil. Neotrop. Ichthyol. 15(3):e170026. (Ref. 118101)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Ytterligare information
PopulärnamnsynonymerMetabolikPredatorerEkotoxikologiReproduktionKönsmognadLekSpawning aggregationFecundityÄggEgg development
Age/SizeTillväxtLength-weightLength-lengthLength-frequenciesMorfometriMorfologiLarverLarvdynamikRekryteringAbundansBRUVS
referenserVattenbrukVattenbruksprofilAvelslinjerGenetikElectrophoresesÄrftlighetSjukdomarBehandlingNutrientsMass conversion
MedarbetareBilderStamps, Coins Misc.LjudCiguateraHastighetSimsättGälytaOtolithsHjärnstorlekSyn
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00653 - 0.03348), b=2.96 (2.77 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
