You can sponsor this page

Trichomycterus nigroauratus  Barbosa & Costa, 2008

Upload your photos and videos
Pictures | Google image
Image of Trichomycterus nigroauratus
Trichomycterus nigroauratus
No image available for this species;
drawing shows typical fish in this Family.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335);  nigroauratus: From the latin nigro (black) and auratus (golden), referring to the colour pattern of the new species..   More on author: Costa.

Environment / Climate / Range Ecology

Freshwater; benthopelagic; depth range 0 - 2 m (Ref. 79612).   Tropical; 22°S - 23°S, 44°W - 46°W

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

South America: Brazil. Upper Barreiro River drainage basin, serra de Bocaina, and upper Piquete, Pirapitinga, Alambari, Pedras, Bonito, and Campo Belo River drainage basins, serra de Mantiqueira, upper rio Paraíba do Sul basin, south-eastern Brazil (Ref. 79612).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 7.3 cm SL male/unsexed; (Ref. 79612)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 11-12; Anal soft rays: 10 - 11; Vertebrae: 35 - 36. Distinguished from all other species of the genus from south-eastern Brazil by the unique colour pattern in living specimens, consisting of golden spots on the snout, flank, above and below the midline, and the dorsum; similar to T. itatiayae and T. diabolus Bockmann, Casatti & de Pinna, 2004 and distinguished from all other species from south-eastern Brazil by possessing a broad metapterygoid, which is wider than long; distinguished from T. itatiayae by having eight pectoral rays (vs seven), anal fin origin posterior to dorsal fin base, between base of dorsal fin rays 9-12 (vs through middle of dorsal fin base, between base of dorsal fin rays 7-8), opercular and interopercular odontodes conical (vs incisiform), 16-21 opercular odontodes (vs 10-15), presence of first two infraorbital pores (vs absence), caudal fin subtruncate (vs rounded), smaller predorsal length (58.1-63.1% SL, vs 63.6-64.0% Sl) and larger eye (eye diameter 8.5-10.3% of head length, vs 7.4-8.2% of head length); distinguished from T. diabolus by the absence of the bony contact area between metapterygoid and quadrate (vs presence), moderate pectoral fin filament, about 20% of pectoral fin length (vs pectoral fin filament absent), barbels well developed, tip reaching between posterior margin of interopercular patch of odontodes and pectoral fin base (vs barbels short, tip never reaching beyond anterior margin of interopercular patch of odontodes), smaller head length (18.0-21.7% SL, vs 22.1-25.8% SL), absence of white and black bars on caudal fin (vs presence) and colour pattern with a broad black stripe on the flank (vs absence of stripe) (Ref. 79612). Body moderately deep, subcylindrical on anterior portion, compressed on caudal peduncle; Head subtriangular in dorsal view; snout blunt; mouth subventral; Nasal, maxillary and rictal barbels well developed; dorsal, anal and pectoral fins approximately triangular (Ref. 79612).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator : Pinna, Mário de | Collaborators

Barbosa, M.A. and W.J.E.M. Costa, 2008. Description of a new species of catfish from the upper rio Paraíba do Sul basin, south-eastern Brazil (Teleostei: Siluriformes: Trichomycteridae) and re-description of Trichomycterus itatiayae. Aqua Int. J. Ichthyol. 14(4):175-186. (Ref. 79612)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 108899)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Download XML

Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00272 - 0.02113), b=3.07 (2.83 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.2   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .