Waterbury Aquarium carries a vast variety of fish and aquarium supplies. It’s a medium sized store but let the size fool you. The staff is very knowledgeable and helpful. They also perform home tank maintenance. I had a problem recently with my 180 foot tank and they came to my home for a small fee to test my water and resolve the issue. The person who came to my home was impressively knowledgeable and professional. Great place!