Classificazione / Nomi
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Hypostomus: Greek, hypo = under + Greek, stoma = mouth (Ref. 45335); khimaera: Derived from the Greek, cimaira or khímaira, a mythological creature with hybrid body, formed
essentially by three animals, a lion, a snake and a goat. The specific name khimaera makes an allusion due to the new species possess features of conspicuously distinct species. A noun in apposition.
Eponymy: From Greek mythology, the Khimaera (or Chimera) was a creature with a hybrid body formed by three animals (lion, goat, snake). The name was chosen because the catfish possesses features of conspicuously distinct species. (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical
South America: Rio Paraguay basin in Brazil.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 16.4 cm SL maschio/sesso non determinato; (Ref. 97225)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 7; Raggi anali molli: 5. Hypostomus khimaera can be diagnosed from all congeners, except those belonging to the H. cochliodon group, by having the following unique combination of characters: absence of notch between metapterygoid and hyomandibula (vs. presence of notch); and strongly angled dentaries, less than 80° (vs. shallow angle between dentaries, generally more than 80°). It differs from all members of the H. cochliodon group, except from H. basilisko and H. soniae, by the presence of a dark tan stripe along the flank (vs. absence). It can be distinguished from H. basilisko and H. soniae by having black spots on the body and fins or at least in one of these (vs. absence of spots). In addition, it can be further separated from H. basilisko by having moderately developed keels (vs. highly developed keels) and 28 vertebrae (vs. 27); and from H. cochliodon by having 12-27 teeth (vs. 7-9), externalized opercle, exposed region easily visible (vs. almost entire internalized opercle, exposed region not easily visible; and 28 vertebrae (vs. 29) (Ref. 97225).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Syntopic with Hypostomus cochliodon in several localities of rio Paraguay basin. Commonly found in small streams than in larger streams. Generally collected along the
margins of deeper sites with sandy bottoms in the rio Aquidauana basin streams (Ref. 97225).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Tencatt, L.F.C., C.H. Zawadzki and O. Froehlich, 2014. Two new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the rio Paraguay basin, with a redescription of Hypostomus cochliodon Kner, 1854. Neotrop. Ichthyol. 12(3):585-602. (Ref. 97225)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01585 (0.00733 - 0.03429), b=2.95 (2.78 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
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0 |
Resilienza (Fonte Biblio. 120179) |
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate vulnerability (35 of 100). 🛈 |