A:I’d like to keep some tropical fish. What do you recommend?
B:I recommend hardy inexpensive fish that does not fight or eat each other.
A:What basic equipment do I need to keep them?
B：They include a tank，a filter to remove dirt suspended in the water and keep water clean，a heater to regulate the temperature in the tank so that the fish will be able to live within normal temperature ranges. and a thermometer—to measure the temperature in the tank.
B:需要鱼缸、过滤器——用于清除水中的悬浮 污物和保持水的清洁、加热器——用于调节 鱼缸中水的温度，使鱼能够生活在正常的温 度范围内、以及温度计一--测量鱼缸内的水温o