how large will a pictus catfish grow

mine were fine..about 3 or 5 at a time with no other fishies
 
a 30 gallon is too small for a pictus, and if those are common goldfish they should be in a different temp zone. It is generally agreed that those danios are too frenetic for a 10 gallon. Please tell us your experience so that we can make suggestions for you :).
 
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