Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Parotocinclus: Greek, para in the side of + greek, ous, otis = ear + Greek, kygklos, ou = a fish (Ref. 45335); planicauda: Derived from the Latin planus (flat) and cauda (tail), in reference to the somewhat quadrangular cross section of caudal peduncle with conspicuous flat lateral surfaces.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Suaçui Pequeno River in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.3 cm SL male/unsexed; (Ref. 81204)
Short description
Identification keys | Morphology | Morphometrics
Differs from its congeners by a combination of the following characters: caudal peduncle quadrangular in cross-section; adipose-fin origin vertically crossing middle length of last anal-fin ray; arrector fossae opening on each side of scapular bridge occupying one fourth to two fifths of distance from mid-ventral suture of scapular bridge to its lateral margin; abdomen totally covered with 5-7 elongated plates on each lateral series and 7-10 series between them; eye small, 2.1-2.5 times in interorbital distance; plates in longitudinal series 24-26; adult individuals measuring up to 2.7 cm SL with 22-27 premaxillary teeth and 21-24 dentary teeth (Ref. 57861).
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Garavello, J.C. and H.A. Britski, 2003. Parotocinclus planicauda, a new species of the subfamily Hypoptopomatinae from southeastern Brazil (Ostariophysi: Loricariidae). Braz. J. Biol. 63(2):253-260. (Ref. 57861)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).