The maximum known length, at the adult stage, is 249
mm (Arratia, 1987). These fish have moderately elongated
body and no scales. It has barbs nasales and suprapreoperculares.
Premaxillary length less than 50% of maxillary length
with 12 to 19 teeth. Palatine elevator crest poorly
developed. More than 52 radii in the caudal fin. Nasal
openings rounded by a long fold of skin, a fold completely
covering the posterior opening. Numerous, short and
rounded papillae throughout the body including lips
and gill membranes, the papillae are thin and sharp
on the maxillary chin. With short papillae on the
roof and floor of the mouth, for the sense of taste.
Origin of the dorsal fin closer to half the length
of the body than the snout. The dorsal fin has two
spines and seven branched and segmented rays, the
first spine in juveniles and adults is short and covered
by the foot , it is commonly not very noticeable,
the second spine is long and strong. The origin of
the pelvic fins is later than half the standard length.
The pectoral fin is longer in the juveniles than in
the adults, the end of the pelvics reaches the origin
of the anal in juveniles and separates during growth;
both pelvic fins are closer together in the juveniles
than in the adults. The anal fin contains simple rays
and 8 to 11 main rays. All the fins are markedly fleshy
(Arratia, 1987). Colouration: D.
camposensis has a uniform dark chestnut or dark
purple colouration on the back, with irregular brown
or purple spots (rounded) on the flanks. In fresh
specimens the belly acquires yellowish, orange or
whitish tones. This colouration is variable with age
and may differ depending on the location (Arratia,
1987). Habitat: The habitat of this
species is not well known and information on reproductive
periods, spawning and feeding sites is lacking. However,
there should not be much difference with the other
diplomats in these aspects (Arratia, 1987). For other
species of the genus, juvenile specimens (from 30
to 120 mm of total length) are found in torrent zones
in rivers (ritrón) , while adults (which measure
about 120 mm in total length ) they prefer the deep
zones or bentos of the Potamon (Arratia, 1983).
D. Camposensis It is not only found in rivers
but also in lakes. Diet: The adult
diet of Diplomystes seems to be exclusively
carnivorous, based on crustaceans of the genus Aegla
, larvae and adults of insects and annelids (Arratia,
America: Valdivia region, southern Chile.
Arratia G, Quezada-Romegialli
C. (2017) Understanding
morphological variability in a taxonomic context in
Chilean diplomystids (Teleostei: Siluriformes), including
the description of a new species. Froese, R. and D. Pauly. Editors.
2018. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 06/2018 ).
de Pinna, M.C.C., 1998. Phylogenetic relationships
of neotropical Siluriformes (Teleostei: Ostariophysi):
historical overview and synthesis of hypotheses. p.
279-330. In L.R. Malabarba, R.E. Reis, R.P. Vari,
Z.M.S. Lucena and C.A.S. Lucena (eds.) Phylogeny and
classification of neotropical fishes. Porto Alegre: