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Fancy Goldfish tank— mixing sizes?


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So I just upgraded my goldfish tank and I’d like to get a ranchu or a lionhead ranchu to go in with my current goldfish. Thing is, buying juveniles is a lot cheaper and I like watching them grow. Would I have issues mixing sizes? Goldfish I have are as follows and sizes are approximate.

oranda - 5”

fantail - 6”-6.5”

fantail - 3”-4”


They are all peaceful, as fancy goldfish are. I just want to make sure the new guy won’t get bullied or run into any issues. I’m fairly new to fancies, though I must be doing okay because everyone (especially my largest and favorite fantail Buddy) have THRIVED and grown a lot. Any advice is appreciated! Adding photo of the old set up for scale.



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