Antilles catshark

The Antilles catshark grows larger than G. arae and G. cadenati, reaching a maximum known length of 46 cm (18 in). Slim in build, it has a somewhat flattened head with a long, pointed snout. The horizontally oval eyes are equipped with rudimentary nictitating membranes (protective third eyelids), and are followed by tiny spiracles. There are no prominent ridges beneath the eyes. The nostrils are divided by triangular flaps of skin on their anterior rims. The mouth is short, wide, and curved, and bears rather long furrows at the corners. The teeth number around 56 upper and 52 lower rows; each tooth has a long central cusp flanked by one or two smaller cusplets on either side. There are five pairs of gill slits. The apexes of two dorsal fins are blunt, with the first originating behind the midpoint of the pelvic fin bases. The second dorsal fin is almost as large as the first, and originates behind the midpoint of the anal fin base. The pectoral fins are rather large and broad, with rounded corners. The pelvic and anal fins are low and angular. The anal fin base measures roughly 8–14% 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 Antilles catshark has been reported from the Straits of Florida, as well as from the waters around Jamaica, Hispaniola, Puerto Rico, the Leeward Islands, and Martinique. Its range may be wider than is known and overlaps that of G. springeri, but not G. arae or G. cadenati. This abundant, demersal species inhabits continental and insular slopes, at a depth of 293–695 m (961–2,280 ft).

The Antilles catshark may form large schools, and feeds mainly on shrimp. It is oviparous; adult females have a single functional ovary, on the right, and two functional oviducts. A single egg matures inside each oviduct at a time. The egg is contained within a flask-shaped capsule measuring around 4.9–5.1 cm (1.9–2.0 in) long, 1.2–1.4 cm (0.47–0.55 in) across the top, and 1.6 cm (0.63 in) across the bottom; there are coiled tendrils at the upper two corners. Males and females attain sexual maturity at approximately 33–36 cm (13–14 in) and 34–46 cm (13–18 in) long respectively.