The Aquarium Project is a pet shop at 347 Lake Rd, listed under Matingarahi, Manukau, although Lake Road is better known as a North Shore address, so check the location before you visit. It has a 4.8 rating on Google. The name suggests a shop focused on aquariums and fish.
A good aquarium shop helps you set up a tank properly, with honest advice on fish, plants, filters and water treatment. Ask about cycling a new tank before adding fish, how to treat tap water and how many fish suit your tank size. Regulars know that new tanks need time for helpful bacteria to establish, that adding fish slowly avoids problems, that water tests help catch trouble early and that regular partial water changes keep fish healthy. Ask which species get on well together, how large they grow and what they eat, since choosing the wrong mix is a common mistake. Look at the health of the tanks in the shop, as clear water and active fish are a good sign. Check the shop's opening hours and ask whether it can order fish or equipment in.
For fish keepers in Auckland, The Aquarium Project on Lake Road is a shop to ask about aquariums and supplies.