It inhabits banks of deep-sea coral at depths of 329–548 m (1,079–1,798 ft), feeding on cephalopods, shrimp, and bony fishes.

Adult blotched catsharks have not been observed; the largest immature specimen is 49 cm (19 in) long.

The blotched catshark was first scientifically described in 1966 by American ichthyologist Stewart Springer, based on a 25 cm (9.8 in) long immature male caught off Cape Canaveral, Florida.

[1] A bottom-dwelling species, blotched catsharks are usually found amongst deepwater coral banks composed largely of Lophelia pertusa.

[5] The blotched catshark preys on cephalopods, shrimp, and bony fishes of surprisingly large size.