Classificazione / Nomi
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: raso: The specific name raso,/i> is used in reference to the type locality, the igarapé Balneário Raso, a tributary of the rio Amapá, Atlantic coastal drainage. A noun in apposition.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical
South America: Rio Raso, rio Amapá basin in Brazil.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 4.6 cm SL maschio/sesso non determinato; (Ref. 118148)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 7; Spine anali: 1; Raggi anali molli: 5. Lithoxus raso is distinguished from all its congeners, with the exception of L. pallidimaculatus, by having large light spots all over the body, spots similar in size with orbit diameter, (vs. light spots over the body absent or light spots very small, similar to size of a tooth, covering only the dorsal portion of the head in L. boujardi); from L. surinamensis and L. pallidimaculatus by possessing an adipose fin (vs. adipose fin absent); from L. lithoides and L. jantjae by having five branched rays in the anal fin (vs. four); and from L. jantjae by having 14 branched rays in the caudal fin (vs. 12). In addition, Lithoxus raso is distinct from L. bovallii by having a lower premaxillary tooth cup length, 3.3-4.0% HL (vs. 4.2-10.4% HL); from L. boujardi by having a greater adipose-spine length, 7.2-8.1% SL (vs. 3.6-4.7% SL), and a greater dorsal adipose-caudal distance, 13.1-14.6% SL (vs. 10.3-11.7% SL); from L. planquettei by smaller caudal peduncle depth, 8.4- 8.6% SL (vs. 9.7-10.5% SL); and from L. stocki by having an enlarged and widened cusp of medial premaxillary teeth (vs. cusps of all premaxillary teeth similar in size, not enlarged), and by having a shorter cleithral width, 30.9-31.2% SL (vs. 32.6-34.2% SL) (Ref. 118148).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Inhabits small- to medium-sized rivers with rocks and sand on the bottom (Ref. 118148).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Silva, G.S.C., R. Covain, C. Oliveira and F.F. Roxo, 2017. Description of two new species of Lithoxus (Hypostominae: Loricariidae) from rio Jari and rio Amapá basins, Brazillian Guiana shield. Zootaxa 4347(1):151-168. (Ref. 118148)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00726 - 0.03306), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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