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 body is covered by tiny, overlapping dermal denticles; each has a leaf-shaped crown bearing a horizontal ridge and three marginal teeth. There is a prominent, saw-toothed crest formed from enlarged denticles along the anterior portion of the dorsal caudal fin edge. This species has a marbled color pattern consisting of usually fewer than 11 dark brown saddles and/or blotches along the back and tail, on a dusky background; the blotches can vary from faint to well-defined by a pale outline. Some individuals also have a distinctive dark marking with three backward-pointing prongs atop the head. The underside is plain and whitish. The inside of the mouth is dark. Biology and ecology 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 long, across the top, and across the bottom; there are coiled tendrils at the upper two corners. Males and females attain sexual maturity at approximately and long respectively. Human interactions The International Union for Conservation of Nature (IUCN) has listed the Antilles catshark under least concern. It is perhaps too small to be captured by some types of fishing gear, though its limited distribution means any increased fishing within its habitat may merit concern. References Antilles catshark Fish of the Caribbean Fish of the Dominican Republic Taxa named by Stewart Springer Antilles catshark