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.
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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