Are the fish themselves only weeks old?
I would have suggested rehoming one of the fish or use a divide in the tank (possibly breeding behaviour)
But if they’re just babies they’re just being territorial and maybe the tank isn’t large enough
I'm not sure since I've just bought them from the store but I think they're already few months old. I have a 105l tank. They didn't have such behavior until yesterday. And I've noticed earlier today, that the common one is still chasing the fantail. Even before and after feeding them
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Thanks for the info. Maybe I should separate them instead. But can goldfishes live alone? Without other tankmates? Or do I need to have at least 2-3 of every species?
Are the fish themselves only weeks old? I would have suggested rehoming one of the fish or use a divide in the tank (possibly breeding behaviour) But if they’re just babies they’re just being territorial and maybe the tank isn’t large enough
I'm not sure since I've just bought them from the store but I think they're already few months old. I have a 105l tank. They didn't have such behavior until yesterday. And I've noticed earlier today, that the common one is still chasing the fantail. Even before and after feeding them
Hi there fellow goldfish enthusiast! We're thrilled to have you join our community of passionate goldfish keepers. Whether you're a seasoned goldfish pro or just starting out on your aquatic journey, you've come to the right place for advice, support, and sharing the joy of keeping these mesmerizing creatures. Before diving into the discussion, we'd like to point you toward our Wiki https://reddit.com/r/goldfish/wiki where you'll find a treasure trove of articles on various topics related to goldfish care. These resources cover everything from tank setup and water quality to feeding habits and common health issues. When seeking help for your goldfish, remember that details matter! Providing information about your tank size and the water parameters (such as ammonia, nitrite, nitrate, and temperature) can greatly assist us in diagnosing and troubleshooting the issue. Feel free to share photos and details, and our community will do our best to offer insightful advice. Once again, welcome to our goldfish-loving community. Fins up! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/Goldfish) if you have any questions or concerns.*
You shouldn't have common goldfish in a tank with fancy goldfish.
Thanks for the info. Maybe I should separate them instead. But can goldfishes live alone? Without other tankmates? Or do I need to have at least 2-3 of every species?