Blue Periwinkle

periwinkle blue
© Tasmanian Government. Image Peter Gouldthorpe
Season: Open all year

bag limit20


possession limit-


boat limit-

(other shellfish species combined)

Guide to symbols

bagBag Limit
housePossession Limit
boatBoat Limit

Minimum size


Most scalefish are measured from the nose to the end of the tail. Get your scalefish measuring ruler or sticker at any Service Tasmania outlet.

Other names

banded periwinkle, blue australwink, little blue periwinkle, banded australwink

Scientific name

Austrolittorina unifasciata

Grows to

Up to

15mm height

Identifying features

​A very small, smooth periwinkle with a pale blue-gray shell with a darker brown apex. They feed on lichens and algae.


Blue periwinkles are found around Tasmania above the high water mark in rock crevices and depressions out of the wind, often in large numbers.

Fishing information

Too small to use as bait or eat.


Avoid walking in areas of high densities of this small shellfish and crushing the shells.

Public health advice

Follow any public health alerts relating to eating wild shellfish - refer to the Department of Health and Human Services or phone their hotline on 1800 671 738.​ Do not consume shellfish from the Tamar or Derwent estuaries.


Fishwatch Report illegal fishing

0427 655 557

What to report? arrow button

Contact us

Recreational Fishing

Level 3, 134 Macquarie St

Hobart TAS 7000

Phone: (03) 6165 3233, 1300 720 647


Commercial Fisheries

Level 3, 134 Macquarie St

GPO Box 44

Phone: (03) 6165 3000, 1300 368 550


Commercial Fisheries Licensing

Level 1, 134 Macquarie St

GPO Box 44

Phone: (03) 6165 3000, 1300 368 550