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Pentanchidae, a family of ground sharks with the overall name deepwater catsharks, but many species are referred to as "catshark". This species in this family were formerly included in the Scyliorhinidae. Atelomycteridae, a family of ground sharks with the overall name coloured catsharks, but many species are referred to as "catshark". This ...
Scyliorhinidae catsharks may be distinguished by their elongated, cat-like eyes and two small dorsal fins set far back. Most species are fairly small, growing no longer than 80 cm (31 in); a few, such as the nursehound (Scyliorhinus stellaris) can reach 1.6 m (5.2 ft) in length.
The honeycomb Izak or Natal Izak (Holohalaelurus favus) is a species of shark belonging to the family Pentanchidae, the deepwater catsharks.This species is found in the Western Indian Ocean, near South Africa. [2]
The cloudy catshark reaches 50 cm (20 in) long and has a thin, deep, and firm body. The narrow head makes up slightly under one-sixth of the total length, and is two-thirds as wide as it is long. The snout is short and rounded. The large nostrils are preceded by small, triangular flaps of skin that do not reach the wide mouth.
Brown catsharks are deep-water sharks that live on the outer continental shelf and the upper slope. They have been known to live at depths ranging from 30 to 650 m and live on the bottom, usually in muddy or sandy areas.
The eggs are contained in tough capsules around 4 cm (1.6 in) long and 1.5 cm (0.59 in) across; the capsule has thick tendrils at the corners that allow it to be secured to the sea floor. The female retains the eggs internally until the embryos are substantially developed, measuring at least 4.3 cm (1.7 in) long.
The eggs are enclosed within tough, flask-shaped capsules 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. The rounded upper corners of the capsule bear coiled tendrils. [5] The spawning grounds of this shark may be located in very rough terrain. [1]
The shark is elongated in appearance. It has a relatively short snout. The anal fin is relatively short and the pectoral fins are low down. On its ventral snout, there are oval-shaped series of ampullae of Lorenzini. The shark is uniformly brown. [1] The specimen caught was 58 cm (23 in) long. [1]