Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Pseudopimelodidae
(Bumblebee catfishes, dwarf marbled catfishes)
Etymology: Microglanis: Greek, mikros = small + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335). More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: Laguna dos Patos and rio Uruguay drainages in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 33009)
Morphology | Morphometrics
soft rays: 9 - 12;
Vertebrae: 30. Distinguished from M. parahybae and M. cibelae by the longer head (29.3-33.8% SL, versus 23.2-27.6 and 25.6-31.1 respectively) and wide body (28.5-33.9% SL versus 23.8-27.7 and 25.4-29.8, respectively). The smaller mouth width distinguish this species from M. eurystoma (50.6-64.3% HL, versus 67.3-84.4).
Reported to reach approximately 9 cm SL (Ref. 81048).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Malabarba, L.R. and J.K.F. Mahler Jr., 1998. Review of the genus Microglanis in the rio Uruguay and coastal drainages of southern Brazil (Ostariophysi: Pimelodidae). Ichthyol. Explor. Freshwat. 9(3):243-254. (Ref. 33009)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00261 - 0.01157), b=3.07 (2.88 - 3.26), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 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) .