Costa described this species in the genus Anablepsoides.

Alternative name Rivulus (Oditichthys) urubuiensis.

The genus Anablebsoides comprises a diversified clade of rivuline killifishes, with over 45 nominal species occurring in a vast area of northern South Amer- ica and some Caribbean islands (Costa, 2011). Rivulus, formerly considered as a subgenus of Rivulus, includes several nominal species with geographic range restricted to streams of the Amazon Forest. However, taxonomic studies have mainly focused on collections from southern, eastern, and western Amazonian regions (e. g., Hoedeman, 1962; Fels & de Rham, 1981; Fels & Huber, 1985; Berkenkamp, 1989; Huber, 1992; Staeck & Schindler, 1997; Costa, 2010; Costa & De Luca, 2011; Valdesalici & Schindler, 2011), where- as studies on species occurring in the central Amazon are still rare (e. g., Garman, 1895; Costa & Lazzarotto, 2008).

More recent studies (e. g., Costa, 2010) have concluded that the diversity of Amazonian rivuline species presently placed in Rivulus is larger than previously stated (e. g., Costa, 2006).
The Amazon concentrates the greatest diversification of species of Rivulus, which are often classified in different species groups (Huber, 1992; Costa, 2006, 2010). Two species groups, the R. urophthalmus and the R. limoncochae groups, are similar by including mid-sized species reaching about 40-60 mm SL, with longitudinal rows of red dots on the flank in males (Huber, 1992).

Costa (2010) provided some characters useful to distinguish these groups, comprising the presence of light yellow to orange zones on the dorsal and ventral margins of the caudal fin in males of species of the R. urophthalmus group and the presence of contact organs on scales of the flank and an oblique transverse stripe on the middle of the dorsal fin in species of the R. limoncochae group. The  R. limoncochae  species  group  sensu  Costa (2010) presently comprises seven nominal species (R. elongatus, R. christinae, R. iridescens, R. limon- cochae, R. parlettei, R. rubrolineatus, R. taeniatus) all endemic to western and south-western Amazon in Colombia, Ecuador and Peru. A new species of this group from the central Amazon in Brazil is described.

The splitting of the genus Rivulus in several genera (Costa 2011) is dicussed by Huber (2012) and several other scientists. The autor of this sites follows the latest evidence produced by Huber in which he sees Rivulus still as a monophyletic assamblage with sub- genera and species groups.

See page: <Oditichthys><introduction>..

No records are available for the breeding of this species but will not differ very much with the way other small Rivulus from the Anablebsoides- group reproduce.

Mostly they need brownish, soft and acid water with pH as low as 5.5.

Remarks :

First of all, life animals are needed for further study of this new species.

Max. size 43.7 mm.
Dorsal 7-9,
Anal 12-15,
D/A +12,
LL scale count 38-39
Pre- dorsal length to % SL – 78.8 %