Order - Carcharhiniformes
Family - Scyliorhinidae
Genus - Poroderma
Species - africanum
The striped catshark was originally described by Gmelin in 1789 as Squalus africanus. This name was later changed to the
currently valid scientific name, Poroderma africanum (Gmelin 1789). Synonyms include Squalus vittatus Shaw and Nodder
1798 and Squalus striatus Lichtenstein 1844. The genus name Poroderma refers to "skin with pores" while
the species name africanum refers to "from Africa".
English language common names include striped catshark, pyjama shark, and striped cat shark. Other common names
are alitán listado (Spanish), gestreepte kathaai (Dutch), l'endormi (French), mácka pyamová (Czech), rekinek leniwy
(Polish), roussette rubanée (French), streep-kathaai (Afrikaans), and stribet rødhaj (Danish).
The striped catshark is endemic to waters off the coast of South Africa in the southeast Atlantic Ocean and western
Indian Ocean. It is common in the waters of Cape Province off South Africa, especially the southern Cape. There are
older records of this species from Madagascar and Mauritius, however these are unconfirmed.
World distribution map for the striped catshark
Occurring both inshore and offshore over the continental shelf, the striped catshark prefers rock reefs ranging from the
intertidal zone to depths of 328 feet (100 m). As a nocturnal species, it is commonly observed in caves and crevices
during the day. It is typically a very sluggish species during the day, with an increase in activity during the
nighttime hours when it searches for prey.
© Doug Perrine
- · Distinctive Features
This is a large catshark with short nasal barbels measuring less than half the length of the nostrils. These barbells do
not reach the mouth. There are two dorsal fins, the first of which is located opposite the midbase of the pelvic fins.
The second dorsal fin is much smaller and terminates at the origin of the caudal fin. The pectoral fins are broad and
rounded in shape.
Striped catsharks are grayish in color with dark longitudinal
stripes and a pale underside
© Doug Perrine
- · Coloration
The striped catshark is grayish in color. There are seven distinct broad dark longitudinal stripes running the
length of the body on the dorsal and lateral sides. One stripe runs down the back of the shark with three parallel
stripes on either side of the body. These stripes become broken towards the tail and lower sides. The underside of
the striped catshark is pale.
Each jaw of this shark has several rows of sharp, thin tricuspid teeth. The mouth is broadly arched and moderately long, with the lower symphysis
somewhat behind the upper exposing the upper teeth when viewed ventrally.
- ·Size, Age, and Growth
Maximum size of male striped catsharks is 39.8 inches (101 cm) total length (TL) 36.6 inches (93 cm) TL for females.
The average size of the adult striped catshark is 23.6-31.5 inches (60-80 cm) TL. Males reach maturity at lengths of
22.8-30.7 inches (58-78 cm) TL and females become mature at 25.6-28.3 inches (65-72 cm) TL. Hatchlings measure 5.5-5.9
inches (14-15 cm) upon emerging from the egg case.
The thick skin of the striped catshark includes dermal denticles that are well calcified.
- · Food Habits
The striped catshark feeds primarily on crustaceans. Other prey items include small bony fish such as anchovy,
gurnards, and hake. It also feeds cephalopods, mollusks, and polychaete worms.
Egg case of the striped catsharks attached to marine vegetation
© Doug Perrine
- · Reproduction
As an oviparous species, the striped catshark lays a single egg case per oviduct. Each season, the female releases
two brownish, purse-shaped egg cases. Each egg case, measuring 2 x 4 inches (5 x 10 cm), has a sticky surface that adheres to kelp
and other marine vegetation. In nature it is unknown how long after being released from the female it takes before
hatching. However, an egg hatched after approximately 5 ½ months in an aquarium. The hatchlings measure about
5.5-5.9 inches (14-15 cm) in length and closely resemble the adult striped catshark.
- · Predators
Predators of the striped catshark include larger sharks such as the
sevengill shark (Notorynchus cepedianus).
Striped catsharks are often caught as bycatch by bottom trawlers
Importance to Humans
© Doug Perrine
The striped catshark is a hardy species, adapting well to life in captivity. Although it is often taken as bycatch
by bottom trawlers, it is not used for human consumption, but instead usually discarded. This catshark is also
sometimes fished recreationally. During the summer months, striped catsharks often congregate into shoals and
easily hooked by recreational fishers who regard this species as a pest.
Danger to Humans
The striped catshark is considered harmless to humans due to its small size, habitat preference and feeding habits.
This shark is currently listed by the World Conservation Union (IUCN) as "Lower Risk/Near Threatened". The IUCN is a global
union of states, governmental agencies, and non-governmental organizations in a partnership that assesses the conservation
status of species.
Having a limited distribution range and residing in shallow waters in heavily fished, highly populated area, the
striped catshark has no specific protection. Even though this species is not specifically targeted by any fishery,
it is subject to fisheries pressure from commercial and recreational fisheries. This is of increasing concern due to
the recent development of commercial fisheries for small sharks for the export market.