Tropical fish and aquarium shop

Home aquarium hobbyists, beginners setting up a first tank, parents buying for kids, and offices or restaurants wanting a display tank.

Markup on live fish and plants, plus higher-margin tanks, equipment and food. Repeat visits for water testing supplies and food keep sales steady.

• Fish care and water chemistry basics
• Customer service and patient advice
• Stock ordering and inventory
• Keeping tanks clean and healthy

• Check with your city or county for a business license and with your state for sales tax registration
• Some states restrict certain fish, plants or invertebrates, so check your state's wildlife or agriculture rules
• Check whether your state or county requires a pet shop or animal dealer permit
• Fish losses from disease or equipment failure can hurt cash flow, so plan for a backup power and quarantine setup
• Get general liability and property insurance, and ask about coverage for water damage and stock loss

Startup costs are typically around $25,000 to $100,000, depending on shop size, display tanks and how much stock you carry. These are estimates, and your plan should include a backup power and quarantine setup for fish losses.

Monthly revenue is typically around $8,000 to $35,000, depending on your location, stock range and customer base. These are estimates. Expect to put in about 40 hours a week at minimum to run a storefront.

Check with your city or county for a business license and your state for sales tax registration. Also check whether your state restricts certain fish, plants or invertebrates, and whether a pet shop or animal dealer permit is required.