Question: must have accessories for aquarium?
Answer: A Fish Tank. It is obvious that you need a fish tank to set up a home aquarium. ... 
An Aquarium Filter. ... 
Aquarium Water Conditioner. ... 
Fish food. ... 
Live Bacteria seeding Product to establish Aquarium Nitrogen Cycle (for new aquarium) ... 
An aquarium heater. ... 
An Aquarium Air Pump.