From the Latin obscurus,
meaning indistinct, in reference to the uniform brown
colour of the fish.
obtusirostris
Obtusi=blunt;
rostris= snout.
obtusis
Blunt.
occidentalis
Pertaining
to the west; from the west.
ocellifer
Bearing eye-like spots.
octocirrus
Eight
filaments, or barbels.
oculata/us
Provided with an eye.
oguensis
The
specific epithet is geographic referring to the Ogowe
(Ogôoué) River where the types originated.
oharai
Osteogaster oharai
is named in honour of Dr. Willian Massaharu Ohara, dear
friend and distinctive ichthyologist, not only for his
extensive contributions to knowledge of South American
freshwater fishes, but for having played a fundamental
role in the professional history of LFCT, having generously
donated dozens of species of Corydoradinae collected by
him over the last decade, some of which were described
in collaboration. A noun in a genitive case.
oiapoquensis
Named for the Rio Oiapoque
in French Guiana were this Corydoras gets its
name from.
olivaris
Means
"olive-coloured" in Latin.
oliveirai
Named in honor of Claudio
de Oliveira, from the Universidade Estadual Paulista “Júlio
de Mesquita Filho”, campus Botucatu (SP), in recognition
of his extensive contribution to the knowledge of
Neotropical fish evolution.
olyroides
–oides, having the form of: referring to superficial
resemblance to (and possible relationship with) Olyra
(Hemibagrus olyroides).
oncinus
This catfish (Liosomadoras)
named after the Jaguar cat, Panthera onca, because
of its markings.
onzagaensis
ensis,
suffix denoting place: Municipio de Onzaga, Departamento
de Santander, Colombia, type locality (Astroblepis
onzagaensis).
opistho-
Behind, back, backward.
orca
The
specifc epithet is an allusion to the coloration resembling
that of the orca whales (Orcinus orca). A noun
in apposition.
orcesi
Dedicated to Dr.Gustavo
Orcés-Villagomez.
oremaculatus
oris
(L.), mouth; maculatus (L.), spotted, referring to two
large black spots on palate that look like little teeth
(Hypophthalmus oremaculatus).
orestis
A mountaineer.
orientale
The
new species is named Chaetostoma orientale, from
the Latin orient-, oriens, orientalis, meaning eastern,
from the east, of or belonging to the east, in reference
to its easternmost distribution among species of the genus.
An adjective in neuter form in agreement with genus gender.
orientalis
Pertaining to the east;
from the east (and east Africa).
orinoco
From
the Orinoco River, Venezuela.
orinocoense
The specific name,
orinocoense, refers to the Orinoco River, Venezuela, the
drainage in which this species is endemic.
ornata/um/us
Ornate;
decorated.
ornaticeps
Ornate head.
ornatissimus
Meaning
very ornate or decorated, referring to its “striking”
colouration (translation), with many black spots on body
and dorsal fin and black bands on tail [replacement name
for Synodontis ornatus Boulenger 1920, preoccupied
by Synodontis ornatus Pappenheim 1914].
ornatipinnis
Ornate
fins.
orixanthum
The
specific name is in reference to the distribution of the
species in the Orinoco basin and its relationship to the
species Megalonema xanthum.
orphnopterus
From the Greek orphnos
= 'dark' or 'dusky' and pteron = 'feather', 'wing'
or 'fin', in reference to the black spot on the dorsal
fin.
ortegai
After
Hernn Ortega Torres, curator of the fish Nacional Mayor
de San Marcos.
osteocarus
From the Greek osteon
= 'bone' and kara = 'head' or 'top'.
osvaldoi
The
specific epithet honours Jorge Osvaldo Fernández
Santos, an esteemed aquarist and fish collector who made
significant contributions to the knowledge of Argentinean
fish by collecting and generously donating numerous specimens
to scientific collections and collaborating with ichthyologists.
He had been an avid promoter of the fish keeping hobby,
particularly with respect to native species. As a result,
this species is named in recognition of Osvaldo’s
contributions to the study and knowledge of Argentina’s
fishes, (Hoplisoma osvaldoi).
otali
The specific name 'otali'
is a Wayana Amerindian name meaning secret, in reference
to the colouration of the species, similar to its biotope,
making it difficult to observe. Wayana Amerindians live
on the sides of the Upper Maroni River basin where the
new species was found. A noun in apposition.
ourastigma
With
a spot on the tail.
oxyptera
The specific name of
oxyptera: oxy, sharp; ptera, fin, presumably
referring to the large, falcate pectoral fins (Paravendellia
oxyptera).
oxyrhynchus
From the Greek oxys
= 'sharp' or 'acute' and rhynchos = 'snout',
alluding to the long snout.
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