Izak catshark (Holohalaelurus regani) fish species and Izak catshark information

Scientific Name
Holohalaelurus regani

Common Name
Izak catshark

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. A broad-headed catshark with crowded dark brown spots on a yellowish background, producing a net-like pattern of light lines; underside white with small black pores; no labial furrows (Ref. 5578). Specimens less than 23 cm TL blackish with white side spots (Ref. 5578).

Classification

Classified By

Gilchrist, 1922

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Cat sharks (Scyliorhinidae)

Distribution

Region

Indian Ocean from Durban, kwaZulu-Natal, South Africa, southwards and westwards to Cape Agulhas; westward into the Atlantic Ocean; northwards to southeast of L?deritz, Namibia.

Distribution

Indian Ocean from Durban, kwaZulu-Natal, South Africa, southwards and westwards to Cape Agulhas; westward into the Atlantic Ocean; northwards to southeast of L?deritz, Namibia.

Range

4°S - 37°S

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

1075 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range ? - 1075 m (Ref. 75585), usually 150 - 300 m (Ref. 75585)

Trophic Level

4.16 s.e. 0.63 Based on diet studies.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

69.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate vulnerability (40 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)

Izak catshark (Holohalaelurus regani) fish species and information / pictures of Izak catshark - Holohalaelurus regani

Izak catshark (Holohalaelurus regani) fish species information

Classification

Distribution

Environment

Physical Size and Genetics

Human Uses and Population