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I am planning on setting up a new tank and cannot decide between a firefin goby group or a mandarin dragonette/goby pair and cannot decide which ones are cooler thanks.
I don't know anything about a firefin goby but I would STRONGLY recommend AGAINST the mandarin. (They need a large 90+ gallon tank that is well established and has a large pod population and still most die).
Hope it didn't come across to hard with that
Edit: If you mean the Firefish Goby then I would say go with it. Very nice looking fish and is on my wish list as well.