Tank MatesĬommon goldfish are great tankmates for the rosy barb, platy fish, and bristlenose pleco. Common goldfish produce a lot of waste, so performing regular water changes is important. High-quality water filters will help maintain hygienic tank conditions.
Water heaters are brilliant tools for regulating the temperature in the tank. Aquarium lighting can affect water temperature and often make the water warmer at the surface. You can avoid this by rooting plants in the substrate and surrounding them with heavier stones so they can’t be moved. Hardy plants like anubias and eelgrass are good choices.Ĭommon goldfish prefer cold water between 68º and 76✯, and a water pH level between 6 and 8. They require a gravel substrate and natural plants and decorations to explore.Īquarium plants face the risk of being eaten or uprooted by common goldfish. Aquarists looking to keep more than one common goldfish in an aquarium should consider adding 10 gallons of water for every additional fish. Tank ConditionsĬommon goldfish tanks should be at least 20 gallons in size. Outdoor ponds should be at least four feet deep to avoid freezing completely, allowing captive goldfish to survive harsher temperatures. In their natural habitat of lakes and ponds, the water is deep enough for the fish to hibernate at the bottom and avoid freezing in the winter. Aquarists can influence activity by controlling the lighting in the tank. However, common goldfish will become less active when their tank is dimly lit, regardless of the time of day. They are fast swimmers, rarely gather in one area of the tank, and will often linger at the surface of the tank if the oxygen levels in the water are low. You should provide common goldfish with plants, caves, and hiding spaces to keep them happy and healthy.Ĭommon goldfish don’t have regular sleeping patterns and are active during the day and at night. Look out for the following signs of stress:Ĭommon goldfish like to explore their environment. Fish living in aquariums without sufficient resources and hiding places will become distressed and sick. You should feed these fish two or three times per day to avoid conflict.Ĭompetition can stress common goldfish. Common goldfish are rarely aggressive, but they will fight for food if the fish are underfed.
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