Benthic on inner continental shelf. Smallest known size of newborn, still with umbilical scars is 9-10 cm TL. Rarely captured and life history unknown .
Physical description for Castello's apron numbfish is currently being compiled.
Behavioural data for Castello's apron numbfish is currently being reviewed.
Marine; pelagic-neritic; depth range 35 - 55 m . Tropical; 38°S - 45°S, 58°W - 66°W Southwest Atlantic: Necochea and Camarones (off Argentina).
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