Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Glanapteryginae
Etymology: Pygidianops: Greek, pyge = rump + Gree, ops = appearance (Ref. 45335); cuao: Named for its type locality, Rio Cuao.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Rio Cuao drainage basin in Venezuela.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.4 cm SL male/unsexed; (Ref. 56682)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 4 - 5; Vertebrae: 41. Diagnosed from its congeners by having diminutive eyes, posterior naris absent, presence of a triangular skin flap at mouth corner, dorsal and ventral fin fold deep and extending forward on the head to a vertical through tip of pectoral fin. Differs from Pygidianops magoi by
the presence of six laterosensory pores on head, presence of pectoral and anal fins, presence of 12-13 caudal fin rays associated with the caudal plate (Ref. 56682).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Schaefer, S.A., F. Provenzano, M. de Pinna and J.N. Baskin, 2005. New and noteworthy Venezuelan glanapterygine catfishes (Siluriformes, Trichomycteridae), with discussion of their biogeography and psammophily. Am. Mus. Novit. (3496):1-27. (Ref. 56682)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).