hunts in the sheltered harbour bays

Size
Length: 80–120 cm, Weight: 5–15 kg
Lifespan
15–20 years
Diet
Feeds on small crustaceans, worms and molluscs. Uses flat, pavement-like teeth to crush hard shells. Forages over sandy and muddy bottoms. Uses electroreception to locate buried prey.
Habitat
Inhabits sandy and muddy bottoms in shallow coastal waters, harbours and estuaries from 5 to 100 metres depth. Often near seagrass beds and rocky outcrops. Prefers sheltered areas with soft substrate.
Range
Found in coastal waters of North and South Islands from Northland to Stewart Island. Most common in harbours, estuaries and sandy bays. Also found in southern Australia and Southwest Pacific.
Endemism
Endemic
Main Threats
Bycatch in set nets and bottom trawls is primary threat. Recreational fishing pressure occurs in some areas. Habitat loss from coastal development and dredging impacts populations.
Population
Populations considered stable across most of range. Caught as bycatch in target fisheries for snapper and flatfish. Also targeted by some recreational fishers. Quota management limits total catch.
Conservation Status
Not Threatened
Human Risk
harmless
Handling Note
native smoothhound shark, harmless to humans, leave undisturbed
Conservation Note
Endemic shark; widely distributed and common in coastal waters, managed under fisheries regulations.
Assessment
NZTCS Sharks, Rays & Chimaeras (2024)
Te Ao Māori
The Māori name is not widely recorded for this species. It was likely grouped with other dogfish in traditional classifications. Valued for its flesh, it was not specifically named in historical records. The classification was broad and functional. Utility was primary. Specific identity was secondary. History did not preserve the detail. Modern taxonomy provides the clarity. The past remains vague regarding this particular shark. Its role in traditional diets was likely minor compared to more prominent species. The lack of specific nomenclature reflects its lower status in the hierarchy of caught fish. It was food, but not featured food.
Most sharks have rough skin. This one does not. rig" class="body-link">Mustelus lenticulatus is named for the small dark spots on its grey body. It also has smooth, scale-less skin. Run a hand along it and it feels like wet leather. Not sandpaper. That is unusual for a shark. That is the name. The texture defines the identity. It sets the species apart from its rougher cousins. Unlike the spiny dogfish, it has no venomous spines. Handle it without fear. It will not sting you. It might bite, but it probably will not. It is a gentle shark, as sharks go. The temperament is mild. The threat is low. Interaction is safe. The reputation is undeserved. It is not a monster. It is a bottom-feeder. It seeks shells, not limbs. Its flat, pavement-like teeth are adapted for crushing. Crabs, clams and other hard-shelled prey are the target. It does not tear flesh. It crushes shells. Swimming happens slowly over the sand. Clams are cracked open with flat teeth. The method is efficient. The diet is specialised. The jaw structure supports the habit. Evolution shaped the tool for the task. Harmless to humans defines its relationship with people. No recorded attacks exist. There is no reason to be afraid. Just a spotted shark with smooth skin. It does its bottom-feeder thing. It ignores swimmers. It ignores divers. It focuses on the sediment. The lack of aggression is notable. The absence of danger is reassuring. Recreational fishers often catch it from beaches and wharves. The firm, white flesh is sometimes sold as lemon fish or rig. This happens alongside the spiny dogfish. Same name, different shark. The fish shop does not always tell you which is which. Confusion is common. Labelling is inconsistent. The consumer rarely knows. The distinction is blurred. The Māori name is not widely recorded. It was likely grouped with other dogfish. Valued for its flesh, it was not specifically named. The classification was broad. The utility was primary. The specific identity was secondary. History did not preserve the detail. Modern taxonomy provides the clarity. The past remains vague. Populations are considered stable. No formal stock assessment exists. It is caught as bycatch in bottom trawl and set net fisheries. No one targets it specifically. A shark that nobody wants shows up in nets set for other fish. The catch is incidental. The value is low. The survival rate is high. The pressure is minimal. The status is secure. For now. That is the spotted smoothhound. Spotted, smooth and harmless. A shark that feels like leather. Eats like a clam crusher. Ends up on your plate as something else. It carries on in the shallows. Unseen. Unvalued. Unafraid. The ocean holds many such creatures. Hidden in plain sight. Waiting for the net. Or not. The choice is random. The outcome is uncertain. The shark persists.