15-gallon glass aquarium comes fully equipped with heater, filtration system, stone disc bubble diffuser, thermometer, decorative plants, and cave. 9 fish: 6 goldfish (2 silver) and 3 rainbow shiner fish. All happy and healthy. Fish and aquarium are free. If you're interested in the aquarium stand as well (built to hold up to 20 gallon tank), it's brand new (arrived 1 month ago) and 150$.