Microlepidogaster arachas

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Related species
- Species in
  Microlepidogaster
- Species in
  Loricariidae
- - Classification -
- Hypoptopomatinae
- Loricariidae
- Siluriformes
- Teleostei
- Chordata
- Animalia

Microlepidogaster arachas Martins, Calegari & Langeani, 2013

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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Siluriformes (Catfishes) > Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Microlepidogaster: Greek, mikros = small + Greek, lepis = scale + Greek, gaster = stomach (Ref. 45335); arachas: Named in reference to the native people Arachás who once lived in the area drained by the rio Araguari (rio das Velhas), type-locality of the new species, and were exterminated by the Caiapós in 1750s. In the Tupi language Araxá means high place where sun can be seen first, thus Arachás were the ones that inhabited the highlands of southeastern Minas Gerais State. A noun in apposition.
Eponymy: The Arachás were a native people who once lived in the area drained by the Rio Araguari – where this fish is found – in Minas Gerais, Brazil. They were exterminated by the Caiapós in the 1750s. (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; demersal. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: tributaries to rio Araguari, rio Perdizes, and rio Dourados, all pertaining to the rio Paranaíba drainage, upper rio Paraná basin in Brazil.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.3 cm SL male/unsexed; (Ref. 92936)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 8; Anal soft rays: 6 - 7; Vertebrae: 31. Distinguished from all congeners, except Microlepidogaster perforatus, by having the anterior portion of compound supraneural plus first dorsal-fin proximal radial contacting the neural spine of ninth vertebra . Differs from Microlepidogaster perforatus by possessing18-29 dentary teeth (vs. 11-15), median series of lateral plates complete, reaching caudal peduncle end, and continuous lateral line (vs. median series of lateral plates terminating two plates before the end of the caudal peduncle, with non-perforated and missing plates in the middle of the series), and 20-24 mid-dorsal plates (vs. 9-13). Can be further separated from Microlepidogaster perforatus and Microlepidogaster dimorpha by having anterior portion of rostral plates with small pointed odontodes (vs. small rounded leaf-shaped odontodes), pectoral axillary slit present only in juveniles, absent in adults specimens (vs. pectoral axillary slit persistent, present in both juveniles and adults), and 21-24 mid-ventral plates (vs. 19-20 plates in Microlepidogaster perforatus, and 17-20 plates in Microlepidogaster dimorpha). Can be diagnosed from Microlepidogaster perforatus and Microlepidogaster longicolla by presenting mid-dorsal series of lateral plates surpassing the vertical through dorsal-fin length (vs. mid-dorsal plate series reduced, reaching the vertical through dorsal-fin base, however never surpassing the dorsal-fin length); and first rib attached to seventh vertebra (vs. first rib attached to 10th or 11th vertebra) (Ref. 92936).

Facultative air-breathing in the genus (Ref. 126274)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Fisch-Muller, Sonia | Collaborators

Martins, F.O., B.B. Calegari and F. Langeani, 2013. Microlepidogaster arachas, a new species of hypoptopomatine catfish (Siluriformes: Loricariidae) from the upper rio Paraná basin, Brazil. Zootaxa 3608(5):379-388. (Ref. 92936)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance

Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
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Eggs
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Larvae
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Distribution
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Anatomy
Gill area
Brain
Otolith

Physiology
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Nutrients
Oxygen consumption
Swimming type
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Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

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Genetics
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5078 [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).

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