Aqua Village is interesting but am not sure of the hours, would pay to ring in advance to find out. Aquaworld in Target Rd Wairau (North Shore) has lots of saltwater fish and corals I thought was cool and some freshwater too. HFF Mt Roskill is my favourite for the variety of fish, products and knowledge and HFF Albany is similar but a bit more spacious. HFF have the best deals for dry stuff and usually their plants are good also. The Animates stores around are all OK but don't have anything particular specialised that I've noticed, but they often have useful specials on other bits. Pupuke Aquarium Centre in Pupuke Rd Birkenhead is another small but interesting store. There is a big fish n pet store at Takanini, forgotten the name. If you had to choose one store though, HFF MR has the most different kinds of fish overall.