Cob (Kabeljou)
Argyrosomus japonicus
Also known as: Kob, kabeljou, daga, mulloway
Illustration: gardenroutefishing.co.za
The dusky kob is the Garden Route's most prized inshore fish — a powerful, silver-bronze predator that grows over 50 kg. Juveniles live in estuaries; big fish patrol the surf zone and deep channels.
Where & how: steep beaches (Wilderness, Plett), river mouths (Gouritz, Groot Brak) and estuary channels (Knysna, Swartvlei). Feeds almost entirely in low light — dawn, dusk and especially after dark. Work 4-6 inch paddletails slowly along the bottom, or fish fresh sardine, chokka or live mullet in the deeper gutters.
Tackle: 10-12 ft surf rods with 15-24 kg braid for the surf; medium spinning outfits in estuaries.
Conservation: kob stocks are under severe pressure — the daily limit is 1 fish and many anglers now release everything over 90 cm, as these are the breeding females.
Behaviour
Moves into the surf and estuary channels to feed at dawn, dusk and after dark.
Reproduction
Spawns in estuaries and inshore waters in summer; juveniles depend on estuary nurseries.
Field guide
Silver-bronze body, oblique mouth, row of pored scales along the lateral line; large fish deep-bodied.
Endemic to southern Africa; found from the Western Cape up the east coast.
Surf zone, deep gutters, estuary channels; juveniles in estuaries
Common 5-15 kg; specimens over 50 kg recorded
Commonly 5–15 kg; specimens over 50 kg recorded.
Mullet, prawn and small fish, hunted mostly in low light.
Estuaries — critical nursery habitat, which is why estuary health matters so much.
Larger fish move along the coast; juveniles stay in estuaries.
Determined, tail-walking runs on light tackle — great sport in shallow water.
Silver kob (A. inodorus), geelbek
Severely depleted; 1 fish per day, 60 cm minimum. Many anglers release all large breeding females.
How to catch Cob (Kabeljou)
10-12 ft surf rod, 15-24 kg braid; medium spinning in estuaries
3000–5000 spinning reel for light estuary and calm-surf work.
6–10 lb braid or 0.25 mm mono.
1/0–3/0 fine-wire hooks for prawn and worm baits.
0.30–0.40 mm fluorocarbon for wary fish.
Paddletails, fresh sardine, chokka, live mullet
When to catch Cob (Kabeljou)
Dawn, dusk and after dark; pushing tide
Best on the pushing tide over the prawn banks and the first of the ebb in the channels.
Dark/new moon nights and the days around it fish best
Feed keenly in warm estuary water, roughly 18–24 °C in summer.
🥅 Landing
Use a knotless landing net; support the fish and keep it wet.
♻️ Release
Barbless or de-barbed hooks help; wet hands, quick photo, and slide it back gently.
📏 Limits & restrictions
⚠️ 60 cm min, 1/day. Heavily depleted — release large breeders
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