Fish

Gorgeous Swallowtail

Meganthias natalensis

A vividly coloured deep-reef anthias off KZN, with a forked tail drawn into long trailing lobes.

Also known as gorgeous seaperch, natal swallowtail, swallowtail gorgeous

Gorgeous Swallowtail
Photo: Stefan Houareau · CC BY 4.0
Typical size
Commonly 25-40 cm
Habitat
Deep rocky reefs and drop-offs
Depth
Roughly 100-250 m

The gorgeous swallowtail is a striking deep-water anthiine seabass, richly coloured in reds, yellows and pinks, with a deeply forked tail whose lobes extend into long streamers. It belongs to the same broad family as the groupers but is a smaller, more delicate reef fish.

It lives on deep rocky reefs and drop-offs off the KwaZulu-Natal coast, well below normal recreational diving depths, usually encountered only by deep-drop anglers or on deep technical dives. There it hovers over the reef picking plankton and small prey from the water column. Being a deep-reef specialist, it is rarely seen alive by divers.