Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Loricariidae
(Armored catfishes) > Hypoptopomatinae
Etymology: Hypoptopoma: Greek, hypo = under + Greek, optoma, opsomai = to look at, to watch + Greek, poma = cover, operculum (Ref. 45335); muzuspi: Named for Museu de Zoologia, Universidade de São Paulo, Brazil (MZUSP).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: Rio Tocantins basin; known only from Rio Agua Fria, in the drainage of Rio Araguaia (main tributary of Rio Tocantins).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.6 cm male/unsexed; (Ref. 84367)
Morphology | Morphometrics
Vertebrae: 27. This species is distinguished from its congeners having the bifid neural spines of vertebra 10-12 expanded distally (vs. bifid neural spines progressively pointed distally); it is further distinguished from all congeners, except H. brevirostratum, by having its preopercle constricted medially (vs. preopercle without constriction) and presence of canal in preopercle, it is semicircular, and located posterior to the preopercle constriction (Ref. 84367).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00221 - 0.01307), b=3.11 (2.90 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.0 ±0.1 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .