) ••. . j," •. • (
... 11
)
a = b
S. mitsuku rii
S . megalops
3a Distance from tip of snout to inner end of a nostril
not longer than distance from inner end of nostril to front
end of lip groove; inner corner of P sharply pointed;
denticles dagger·shaped with a single cusp ................ S. megalops
3b Distance from tip of snout to inner end of a nostril
longer than distance from inner end of nostril to front
end of lip groove; inner corner of P rounded; denticles
broad with 3 cusps .................. ...... .............. .... .... S. mitsukurii
5.24 Squalus acanthias
Linnaeus, 1758
Spotted spiny dogfish
Spikkel-penhaai
Squalus acanthias Linnaeus, 1758: 233 (European Ocean); Smith,
SFSA No. 54*; Bass et aI., 1976: 13*; van der Elst, 1981: 61*.
13·1-13
Teeth 11-1-11 '
~~ :(. >. ' -
y
.... ,
:- ).-{
N
T
5.24 Squalusacanthias: 46 em female (off Cape Town). N, T & d as in 2.1.
N
5: SQUALIDAE (DOGFISHES)
Brownish grey above, paler below. White spots on upper
surface prominent in juveniles, often indiscernible in
adults. Three to 4 pups per litter, born at about 33 cm; males
mature at 48-50 cm, females at 55-60 cm; attains at least 68
cm (males) and 79 cm (females). Specimens from our area
smaller than in many other parts of the world. Found in
cooler shallow waters of all oceans in both hemispheres; in
our area common off the southern and southwestern Cape,
ranges east at least to Port Elizabeth, particularly during
winter.
5.25 Squalus asper
Merrett, 1973
Roughskin spiny dogfish
Ruwevel-penhaai
Squalus asper Merrett, 1973: 94, PI. 1b, Figs. 1-4 (equatorial western
Indian Ocean) ; Bass et aI., 1976: 18*.
13-1-13
Teeth 11-1-11'
Juveniles brown, adults grey; paler below. Fins prominently white-edged. Skin rough. About 22 pups per litter,
born at about 28 cm; attains at least 90 cm (males) and 118
cm (females). Edge and slope of continental shelf; Natal to
north of Madagascar, also reported from western Atlantic.
(
5.25 Squalus asper: 117.5 em female (Mozambique). Ventral view of head of 38 em female (Natal). N = nostril. d = denticles: left male. right female.
61
... 11
)
a = b
S. mitsuku rii
S . megalops
3a Distance from tip of snout to inner end of a nostril
not longer than distance from inner end of nostril to front
end of lip groove; inner corner of P sharply pointed;
denticles dagger·shaped with a single cusp ................ S. megalops
3b Distance from tip of snout to inner end of a nostril
longer than distance from inner end of nostril to front
end of lip groove; inner corner of P rounded; denticles
broad with 3 cusps .................. ...... .............. .... .... S. mitsukurii
5.24 Squalus acanthias
Linnaeus, 1758
Spotted spiny dogfish
Spikkel-penhaai
Squalus acanthias Linnaeus, 1758: 233 (European Ocean); Smith,
SFSA No. 54*; Bass et aI., 1976: 13*; van der Elst, 1981: 61*.
13·1-13
Teeth 11-1-11 '
~~ :(. >. ' -
y
.... ,
:- ).-{
N
T
5.24 Squalusacanthias: 46 em female (off Cape Town). N, T & d as in 2.1.
N
5: SQUALIDAE (DOGFISHES)
Brownish grey above, paler below. White spots on upper
surface prominent in juveniles, often indiscernible in
adults. Three to 4 pups per litter, born at about 33 cm; males
mature at 48-50 cm, females at 55-60 cm; attains at least 68
cm (males) and 79 cm (females). Specimens from our area
smaller than in many other parts of the world. Found in
cooler shallow waters of all oceans in both hemispheres; in
our area common off the southern and southwestern Cape,
ranges east at least to Port Elizabeth, particularly during
winter.
5.25 Squalus asper
Merrett, 1973
Roughskin spiny dogfish
Ruwevel-penhaai
Squalus asper Merrett, 1973: 94, PI. 1b, Figs. 1-4 (equatorial western
Indian Ocean) ; Bass et aI., 1976: 18*.
13-1-13
Teeth 11-1-11'
Juveniles brown, adults grey; paler below. Fins prominently white-edged. Skin rough. About 22 pups per litter,
born at about 28 cm; attains at least 90 cm (males) and 118
cm (females). Edge and slope of continental shelf; Natal to
north of Madagascar, also reported from western Atlantic.
(
5.25 Squalus asper: 117.5 em female (Mozambique). Ventral view of head of 38 em female (Natal). N = nostril. d = denticles: left male. right female.
61