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Seventy-four

Fish · Last reviewed 2026-08-27

PROHIBITED IN SOUTH AFRICA: no person may catch, land or possess one. Once the most important line fish in KwaZulu-Natal, the seventy-four collapsed under the targeting of its own spawning aggregations and is now Endangered.

IF YOU HAVE ONE OF THESE, IT GOES BACK. The seventy-four is on the South African prohibited species list. No person may catch, land or be in possession of one, and an inadvertent capture must be returned to the sea immediately with as little harm as possible. That is the first thing on this page because it is the only thing on this page that anybody needs at the time they need it.

IT WAS ONCE THE FISH KWAZULU-NATAL WAS FAMOUS FOR. Through the middle of the twentieth century the seventy-four was the mainstay of the Natal line fishery, landed in enormous quantities from the offshore reefs.

AND IT COLLAPSED THE WAY AGGREGATING FISH COLLAPSE. It forms dense spawning aggregations on known offshore reefs at known times, and a fishery that finds one can remove the whole reproductive output of a stock in a season. The species has never recovered, which is why the response was not a bag limit but a prohibition.

IT IS A LARGE PINK-SILVER SPARID with a series of fine blue-violet longitudinal lines along the flanks and an oblique blue band under the eye — reaching about 120 cm and 16 kg on the reference data, on reef from thirty metres down.

THE NAME IS ONE OF FISHING'S BETTER MYSTERIES and has no settled explanation. The Afrikaans is a straight translation: vier-en-sewentig.

IUCN: ENDANGERED, assessed 11 July 2024.

Identification

No photograph of Seventy-four has passed identity review yet, so none is shown. FishingHQ publishes a species photograph only once somebody has confirmed the animal in it against the species record’s own diagnostic features.

Scientific name
Polysteganus undulosus
Family
Sparidae
Water
Saltwater
Conservation status
Endangered
Regions
East & Southern Africa
  • FINE BLUE-VIOLET LONGITUDINAL LINES along a pink-silver flank — the character that separates it from the other large pink reef sparids.
  • AN OBLIQUE BLUE BAND UNDER THE EYE on most fish.
  • LARGE: to about 120 cm and 16 kg, which puts it above roman, dageraad and slinger.
  • A DEEP BODY WITH A STEEP HEAD PROFILE, deepening with age.
  • IF YOU ARE UNSURE, TREAT IT AS ONE AND RETURN IT. This is a prohibited species and the cost of a wrong guess is asymmetric.

Size

Typical
50–80 cm. The species may not be taken at all.
Large
Over 100 cm.

Exceptional: FishBase records a maximum of 120 cm and 16 kg.

How South African sea-fishing rules work

SOUTH AFRICA REGULATES SEA FISHING SPECIES BY SPECIES, WHICH IS NOT HOW MOST COUNTRIES DO IT.

A recreational permit is the entry ticket and not the whole of it. On top of it sits a minimum size and a daily bag limit SET PER FISH, a closed season on a small number of species, and a cumulative daily cap across everything caught — so being inside the limit for each species separately does not put you inside the limit overall.

THERE IS A CAP ON HOOKS on a rod-and-line permit. A spearfishing permit is separate, allows no breathing apparatus beyond a snorkel, and PROHIBITS SPEARFISHING IN AN ESTUARY — a flat ban rather than a limit, and the rule visitors most often do not know.

A LANDED FISH MUST KEEP ITS HEAD AND TAIL so its length can be checked. Nothing caught on a recreational permit may be sold by anyone. And a small list of species may not be caught, landed or possessed at all.

FISHINGHQ DOES NOT PRINT THE FIGURES, and the reason is on this page rather than in a policy document: the department's own guidance says adjustments may be forthcoming given the acknowledged crisis of linefish, the numbers differ by species and by area and by whether you were standing on a beach or sitting in a boat, and a stale figure on a fishing site is worse than no figure at all. Get the current position from the Department of Forestry, Fisheries and the Environment, and get the protected-area position from whichever body manages the stretch of coast you are on.

Official guidance — why, and the sources (2)

Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.

  • Marine Recreational Fishing Regulations in South Africa South African Association for Marine Biological Research (SAAMBR), summarising the Marine Living Resources Act and its regulations, 2023 (Scientific institute)Relied on for: The minimum size, daily bag limit and closed season for this species, its place on the prohibited or permitted list, and the cumulative ten-fish daily cap that sits above every individual limit.States this directlyPassage read and verified
  • Marine Recreational Fishing: Regulations for Linefishing, under the Marine Living Resources Act Department of Forestry, Fisheries and the Environment, South Africa (published as issued under Act 18 of 1998), 2000 (Government fisheries body)Relied on for: The general framework: the permit requirement and its age threshold, the no-sale rule, the measurement convention, the category lists, and the closed seasons named in the regulations themselves.States this directlyPassage read and verified

Lifecycle and reproduction

A slow-growing, late-maturing, aggregating reef sparid. The combination of an aggregating spawning habit and a fishery that knew where and when the aggregations formed is the whole of the collapse: a fleet working a spawning reef removes reproductive output rather than a share of a population, and the species has not recovered in the decades since.

Forms dense spawning aggregations on known offshore reefs, which is what made it both the mainstay of a fishery and the fish that fishery destroyed. Oceanodromous, moving between grounds seasonally. The aggregating habit is the single most important fact about this species and the reason a prohibition rather than a bag limit was the response.

Feeding and senses

A reef feeder taking fish, cephalopods and invertebrates over structure from about thirty metres down. It takes a bait readily, which is part of why it was so heavily fished and why an accidental capture on a modern reef trip is entirely possible.

Vision and lateral line at close range over deep reef. Nothing about its senses protects it from a baited hook, which is why the protection has to be a rule.

Through the year

Oceanodromous, moving seasonally between grounds and aggregating to spawn. The recovery of the species, if it happens, depends on those aggregations being left alone, which is what the prohibition is for.

Distribution

Western Indian Ocean, from southern Mozambique to Durban in South Africa — a very restricted range for a fish that once supported a major fishery. Reef-associated from about thirty metres down. Assessed by the IUCN as Endangered on 11 July 2024.

This is a biological range — where the species occurs, not a prediction that you will catch one. To browse the fishing geography FishingHQ holds, start at fishing places.

Why anglers care

NONE THAT IS LAWFUL. The seventy-four is on the South African prohibited species list: no person may catch, land or be in possession of one under any permit. Its significance is historical and cautionary — it was the most important line fish in KwaZulu-Natal and it was fished off its own spawning reefs until there was nothing left to aggregate. It is Endangered on the IUCN assessment of July 2024.

Handling and returning

RETURN IT IMMEDIATELY, with as little harm as possible. That is the legal requirement and it is not conditional on anything.

DO NOT BRING IT ABOARD if it can be released at the side of the boat. Do not take it out of the water for a photograph.

UNHOOK WITH A LONG DE-HOOKER over the water, or cut the trace at the hook.

IT WILL HAVE BAROTRAUMA from reef depth and will not swim down on its own. USE A DESCENDING DEVICE. A prohibited fish released at the surface to float away has been killed just as surely as one put in a box, and the law's phrase — with as little harm as possible — means the descending device rather than the good intention.

AND IF YOU KEEP CATCHING THEM, MOVE. Repeated captures from one mark means you are anchored over an aggregation of an Endangered species.

Check the rules before you fish

Fishing laws, bylaws, access rules, seasons, bait restrictions and permitted methods vary by location and can change. Check the current rules from the relevant authority and the water you intend to fish before fishing.

Check with:

  • Current national or regional law for where you are fishing
  • Current local bylaws
  • The relevant fisheries authority
  • The landowner, club or fishery whose water it is
  • Any restrictions specific to the species or the method you intend to use

Where to go next

Similar and related fish

Where you will find it

More fish

Not related to this page — just the rest of the section. There is little else joined to this subject yet, and a short page should still lead somewhere.

Sources and evidence

  • FishBase: a global information system on fishes Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Scientific name, family, environment, depth range, latitudinal range, maximum recorded length, weight and age, and the IUCN category with its assessment date.States this directlyPassage read and verified
  • The IUCN Red List of Threatened Species International Union for Conservation of Nature (Conservation authority)Relied on for: The global Red List category and the assessment behind it, assessed 11 July 2024. A statement about the species across its range and not about any managed stock.States this directlyCitation checked — the work exists and is described correctly
  • Marine Recreational Fishing Regulations in South Africa South African Association for Marine Biological Research (SAAMBR), summarising the Marine Living Resources Act and its regulations, 2023 (Scientific institute)Relied on for: The minimum size, daily bag limit and closed season for this species, its place on the prohibited or permitted list, and the cumulative ten-fish daily cap that sits above every individual limit.States this directlyPassage read and verified
  • Marine Recreational Fishing: Regulations for Linefishing, under the Marine Living Resources Act Department of Forestry, Fisheries and the Environment, South Africa (published as issued under Act 18 of 1998), 2000 (Government fisheries body)Relied on for: The general framework: the permit requirement and its age threshold, the no-sale rule, the measurement convention, the category lists, and the closed seasons named in the regulations themselves.States this directlyPassage read and verified
Why the 2 connections on this page are here, and the sources

Similar and related fish

Backed by research 1 connection

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • Scotsman

    A relatedness claim made for identification rather than for taxonomy: these are the pairs a reader holding one has to tell apart, and in several cases the rules that apply to them differ. The evidence names the object's binomial because the common names are precisely what collides.

    • FishBase: a global information system on fishes Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Identity, family placement, distribution and diagnostic characters of Polysteganus praeorbitalis, and of the species it is confused with in the hand.States this directlyPassage read and verified
    • ORI Fish Fact Sheets: the species accounts of the Oceanographic Research Institute Oceanographic Research Institute, South African Association for Marine Biological Research (SAAMBR), Durban, 2023 (Scientific institute)Relied on for: The description and distribution the research institute publishes for Polysteganus praeorbitalis, including the characters that separate it from its neighbours.States this directlyPassage read and verified

Where you will find it

Backed by research 1 connection

Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.

  • The KwaZulu-Natal coast

    A claim that a coast or region contains the ground and conditions this species is associated with. It is a distributional statement about the world, it rests on the reference literature and on the institute that surveyed it, and it deliberately asserts nothing about access, permission or catch.

    • ORI Fish Fact Sheets: the species accounts of the Oceanographic Research Institute Oceanographic Research Institute, South African Association for Marine Biological Research (SAAMBR), Durban, 2023 (Scientific institute)Relied on for: Distribution, habitat, movement and residency for South African linefish, from the institute that did the tagging and the ageing.States this directlyPassage read and verified
    • FishBase: a global information system on fishes Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association for the species named.States this directlyPassage read and verified

How FishingHQ labels evidence is explained in the evidence policy.

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