Hello all, I was given a few marble goby about a month ago. The largest one is about 20". I am wondering how to make sure it doesn't starve to death. I saw the smaller ones eat live fish, but never the big fella. Seems to just sit at the bottom of the tank and sleep. Please advise
Maybe you never notice it has eaten if not try putting a prawn in front of it.
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But I have seen the fish landed right in front of its mouth, but no reaction from the big fella