Black Snapper

Fascinating facts about the Black Snapper

• A fork length of 71 cm (28 in) is the maximum recorded, while most individuals are about 35 cm (14 in) long.
• Its dorsal fin carries 14–16 spines followed by 11–12 soft rays.
• During winter the species spawns in the surf zone and estuary mouths.
• At night the fish hides in sheltered areas and camouflages itself by turning brown.
• Although once shunned by European settlers for its “muddy” taste, modern Australian fish markets sell the species as “black snapper.”

At a glance

About the Black Snapper

Girella tricuspidata, known in Australia as luderick and in New Zealand as parore, is a sleek, oval-shaped sea chub with a dark greenish-grey back that fades to silvery grey on its sides and belly. Its body is covered in modestly sized ctenoid scales and a distinctive arched lateral line of 48–51 pores runs parallel to the dorsal profile. The continuous dorsal fin bears 14–16 spines followed by 11–12 soft rays, while the anal fin mirrors the soft-rayed portion with three spines and 11–12 rays. At its largest, the fish can reach a fork length of 71 cm (28 in) and weigh up to 4 kg (8.8 lb), though most individuals hover around 35 cm (14 in). A subtle surprise lies in its dentition: an outer row of overlapping, flattened tricuspid teeth works alongside a band of tiny crushing teeth, allowing the fish to both scrape algae and grind tougher plant material. In the shallow coastal and estuarine waters of southeastern Australia and northern New Zealand, luderick form massive daytime schools around rocky outcrops and jetties, then retreat to hidden shelters at night, turning a brown hue to blend with the substrate. Juveniles seek refuge in seagrass beds, while adults embark on seasonal runs from estuaries into the surf zone to spawn during winter. Though primarily herbivorous, grazing on seaweeds such as Enteromorpha intestinalis, Ulva lactuca, Ulva intestinalis and sea cabbage, the species is opportunistic, snatching small crustaceans, pipi, mussels and beach worms when the chance arises, a dietary flexibility that fuels its success in variable coastal habitats

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