[3] It is an extremely rare frog, and no sightings have been recorded since the original description in the early 1990s.

[4] Unlike the related poison dart frogs, this species is fully aquatic and much larger, up to 62 millimetres (2.4 in) in length.

[4] It is commonly believed that the Aromobates nocturnus is the sister group of the Dendrobatidae due to its unique characteristics including its larger size, nocturnal and aquatic nature, and the presence of the adductor mandibulae externus superficialis muscle most often found in other Dendrobatids.

[1] The natural habitats of Aromobates nocturnus are small cold-water streams in cloud forests.

The species is threatened by habitat loss caused by agriculture, involving both crops and livestock.