Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Loricariidae
(Armored catfishes) > Neoplecostominae
Etymology: calvus: From the Latin adjective calvus, meaning bald, in allusion to the area on the head without odontodes.
Environment / Climate / Range
Freshwater; demersal. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.0 cm SL male/unsexed; (Ref. 57731)
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
South America: Córrego Juruba and ribeirão Agua dos Oito of the rio Tibagi basin in Brazil.
Found usually along the bottom among rocks and stones, just under small waterfalls, of a small creek flowing through a landscape of mixed open field, riparian vegetation and forest, sometimes with a very degraded margin. The stream has rocky bottom, with small to medium-sized rocks, loose stones and gravel and some small pools along the streams with sand and mud on the bottom (Ref. 57731 ).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Jerep, F.C., O.A. Shibatta, E.H.L. Pereira and O.T. Oyakawa, 2006. Two new species of Isbrueckerichthys Derijst, 1996 (Siluriformes: Loricariidae) from the rio Paranapanema basin, Brazil. Zootaxa 1372:53-68. (Ref. 57731)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates in FishBase (Ref. 93245
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .