It is a poorly-studied member of the genus Bryconops with few records and vague distribution accounts, though it is believed to be endemic to the Rio Tapajós.

[4] Some authorities believe that the validity of B. transitoria as a species needs investigation given its similarity to B. melanurus and its sparse collection records.

[8] It was placed there alongside the genera Piabucus and Iguanodectes, but while those two make up the subfamily Iguanodectinae, Bryconops is a solitary clade.

[4] While B. transitoria has not been the subject of specific dietary study, it is likely to be an insectivore or omnivore, based on behavior seen in other members of the genus.

[1] However, its natural habitat in the Tapajós basin is known to be facing various anthropogenic threats; other species of Bryconops are under similar survival pressure.

[16] This is only from a legal standpoint, however - illegally, there have been instances of unlawful mining kicking up enough sediment to turn the waters of the Tapajós brown.

[citation needed] The illegal gold mining industry is a thriving market in Latin America, despite its inherent danger to both participants and the environment.