Full-grown Black Moor goldfish typically reach 6 to 8 inches (15-20 cm) in length, with some reaching up to 10 inches under optimal conditions. These distinctive, velvety black, telescope-eyed fish take about 1 to 6 years to reach full maturity. They require a minimum 20-30 gallon tank, as they are messy eaters needing strong filtration, and are generally peaceful but slow swimmers.
