Clinoporus

Lore & Background

The ladder klipfish, Clinoporus biporosus, is a rare species found in subtropical waters of the Atlantic Ocean along the South African coast, from Saldanha Bay to False Bay. It inhabits the subtidal zone among rocks near the low water mark, extending down to a depth of 30 metres. The body is elongate and moderately compressed, with prominent eyes slightly larger than the snout and a slightly convex head profile bearing a ridge along the centreline of the snout. The sensory pores are large and conspicuous, and there are no tentacles above the eyes. The dorsal fin is low and even, without a notch or cirri, and the caudal peduncle is short. Colouration is uniform deep crimson, or brownish to yellowish brown.

Reader's Guide

Clinoporus is significant as a monotypic genus, containing only Clinoporus biporosus. Its most distinctive feature is the double line of large pores along the lateral line, which is referenced in both the generic name (Clinoporus, combining Clinus and 'porus' for pores) and the specific name biporosus ('two pores'). This anatomical trait sets it apart from related clinids. The species is rare and restricted to a narrow range along the South African coast, from Saldanha Bay to False Bay, occurring in the infratidal zone among rocks. Its maximum recorded length is 13 centimetres. The ladder klipfish's uniform colouration—deep crimson, brownish, or yellowish brown—and lack of tentacles above the eyes further distinguish it. The genus remains poorly known, with no other members described, and its ecological role and population status are not detailed in the available literature.

Did You Know?

• Clinoporus biporosus is the only known member of the genus Clinoporus.
• Its lateral line has large pores opening above and below throughout its length.
• The species reaches a maximum length of 13 centimetres (5.1 in) TL.
• It is found only from Saldanha Bay to False Bay along the South African coast.