of gill slits. The first dorsal fin has a blunt apex and is placed over the aft part of the pelvic fins. The second dorsal fin is similar in shape and nearly equal in size to the first, and placed over the aft part of the anal fin. The pectoral fins are fairly large and broad. The small pelvic fins are low relative to their bases, and have angular margins. The anal fin is elongated and placed close to the pelvic and caudal fins; the anal fin base measures 11% of the total length, about comparable to the space between the dorsal fins. The caudal fin has a small lower lobe and a ventral notch near the tip of the upper lobe. The body is covered by small, overlapping dermal denticles, each with a teardrop-shaped crown with a median ridge and three marginal teeth. There are enlarged denticles forming distinctive saw-like crests along the anterior portions of both the dorsal and ventral caudal fin edges. This species has a unique dorsal color pattern, consisting of dark horizontal stripes outlined in white in front of the dorsal fins, and a series of dark saddle-like markings running from the first dorsal fin base to the tail, on a dusky background. The underside is uniformly white. Biology and ecology There is little known of the natural history of the Springer's sawtail catshark. Reproduction is presumably oviparous; other females of the G. arae complex produce flask-shaped egg capsules around long, with tendrils at the upper two corners. Adult males have yet to be captured; the largest immature male measured long. Females are mature by a length of . Human interactions The International Union for Conservation of Nature has listed the Springer's sawtail catshark as least concern. Given its restricted range, it may be negatively affected by any expansion of deepwater fisheries in the region. It is occasionally caught in bottom trawls. References Springer's sawtail catshark Fish of the Caribbean Fish of the Dominican Republic Springer's sawtail catshark