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Teleostei (teleosts) > Siluriformes (Catfishes) > Diplomystidae (Velvet catfishes)
Etymology: Diplomystes: Greek, diploos = twice + Greek, mystax, -akos = lip (Ref. 45335); incognitus: The specific epithet incognitus is in reference that recognition of the species was obscured by the assumption that Diplomystes chilensis also extended south of Maipo Basin.

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

Freshwater; demersal. Tropical

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South America: Rapel, Mataquito, Maule, and Itata Basins in Chile.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 15.3 cm SL male/unsexed; (Ref. 116749)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 2; Dorsal soft rays (total): 6 - 7; Anal soft rays: 13; Vertebrae: 40. Diplomystes incognitus can be diagnosed from other species of the genus Diplomystes by having the following characters: skin of head, body, and fins densely covered by round, short papillae giving the skin a blackberry-like or verrucose aspect in large individuals; with a short head, slightly squarish and as long as broad (vs. slightly longer more triangular-shaped head); height of dorsal fin, ca. 20% of SL (range 17-25%) and triangularly-shaped (vs. slightly rhomboidal); maxilla with 7-9 teeth (vs. 8-13 in D. chilensis, 11-3 in D. nahuelbutaensis, and 12-19 in D. camposensis); with 10 infraorbital bones, as in D. nahuelbutaensis, but the dorsalmost compound bone is absent; urogenital pore and anus placed between posterior tips of pelvic fins as in D. chilensis (vs. urogenital pore and anus placed between pelvic fins or in between the distal tips of pelvics and anal fin); lack of pores of axillary gland with occasionally four on one side of body (vs. two or three pores) (Ref. 116749).

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

Main reference Upload your references | References | Coordinator : Ferraris, Jr., Carl J. | Collaborators

Arratia, G. and C. Quezada-Romegialli, 2017. Understanding morphological variability in a taxonomic context in Chilea diplomystids (Teleostei: Siluriformes), including the description of a new species. PeerJ 5:e2991; DOI 10.7717/peerj.299. (Ref. 116749)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Endangered (EN) (A2c+4c); Date assessed: 16 March 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5703 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00178 - 0.01174), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Diplomystes incognitus Arratia & Quezada-Romegialli, 2017