Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); listruroides: Name 'listruroides' in allusion to the superficial similarity of the new species with species of the catfish genus Listrura Pinna, 1988 (Trichomycteridae: Microcambevinae).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.6 cm SL male/unsexed; (Ref. 137860)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal spines: 2; Anal soft rays: 5; Vertebrae: 40. This species is distinguished from its congeners by the following set of characters: pelvic fin and girdle absent; caudal fin margin aligned with the caudal peduncle, forming a spatula-like tail; dorsal 24 or 25 and ventral 20 procurrent caudal-fin rays; vertebrae 40; the dorsal-fin origin at the vertical between the centrum of the 24th vertebra; the anal-fin origin at vertical through the centrum of the 26th or 27th vertebra; and a vermiculate colour pattern on the flank (Ref. 137860).
Body shape (shape guide): elongated; Cross section: oval.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Costa, W.J.E.M., V.M.. Azevedo-Santos, J.L.O. Mattos and A.M. Katz, 2023. Molecular phylogeny, taxonomy and distribution patterns of Trichomycterine catfishes in the Middle Rio Grande Drainage, South-Eastern Brazil (Siluriformes: Trichomycteridae). Fishes 8:206. (Ref. 137860)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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