It is found on the upper continental slope off the coast of Suriname, French Guiana and northern Brazil, including the mouth of the Amazon River at depths between 72 and 450 metres (236 and 1,476 ft).

[1] The slender catshark seems to be endemic to the upper continental slope of the coast of Brazil and Suriname including the Amazon estuary, between 4°N and 2°S .

Examination of the stomach contents of captured individuals shows that its diet also includes foraminifera and sponges, and the dermal denticles of other sharks have also been found.

[3] The slender catshark is a little studied shark and the IUCN has rated it as "least concern" in its Red List of Threatened Species.

The population size and trend is unknown but the shark has a limited range and may be vulnerable to pollution in the Amazon River water.