Classification / Names
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Hypoptopoma: Greek, hypo = under + Greek, optoma, opsomai = to look at, to watch + Greek, poma = cover, operculum (Ref. 45335); elongatum: Named for the elongated general shape of the body, particularly marked at the tip of snout, caudal peduncle, and caudal fin.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce benthopelagico. Tropical
South America: Lower Rio Tapajos and lower Rio Trombetas.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 10.2 cm TL maschio/sesso non determinato; (Ref. 84367)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Vertebre: 27. This species is distinguished from its congeners by having a non-pigmented band on the head positioned parallel to the ventral margin of the rostral and lateral snout plates and with the margin between pigmented and non-pigmented plates very well defined (vs. absence of a distinct pigmented. It can be further distinguished from its congeners, except for H. inexspectatum, by having the ventral surface of the anterior rostral plate as wide as the ventral surface of the first lateral rostral plates (vs. ventral surface gradually widening from anterior rostral to lateral rostral plates). It is readily distinguished from H. inexspectatum by having a greater number of plates along the trunk medial series 23 (vs. 20-21 (21)), by having the snout appearing pointed in dorsal view due to a slight concavity between rostral plate and first infraorbital (vs. snout typically spatulate), and by having, if present, a distinct series of odontodes along dorsal and ventral rostral margin of snout restricted to the anterior rostral plate (vs. series of odontodes along dorsal and ventral rostral margin of snout extended laterally to include second and third infraorbitals) (Ref. 84367).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Aquino, A.E. and S.A. Schaefer, 2010. Systematics of the genus Hypoptopoma Günther, 1868 (Siluriformes, Loricariidae). Bull. Amer. Mus. Nat. Hist. 336:1-110. (Ref. 84367)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00374 - 0.01935), b=3.09 (2.90 - 3.28), 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.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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