the upper lobe. The small, overlapping dermal denticles each have a leaf-shaped crown with a median ridge and three teeth on the posterior margin. A crest of enlarged denticles is present along the dorsal caudal fin margin. This species is brownish above and lighter below, with a faint darker saddle beneath each dorsal fin, and two darker bands on the caudal fin. The interior of the mouth varies from light to dusky. Biology and ecology The natural history of the dwarf sawtail catshark is poorly known. Males attain sexual maturity at around long, and females at long. Human interactions Only a few specimens of the dwarf sawtail catshark have been collected. The International Union for Conservation of Nature (IUCN) to list this species as least concern. The depth range it occupies is not known to be utilized by commercial trawl fisheries. References dwarf sawtail catshark Fish of the Philippines Endemic fauna of the Philippines Taxa named by Stewart Springer dwarf sawtail catshark