what fish could i put in a 160 ltre tropical fish tank?

for christmas im getting a 160 ltre tropical fish tank with a heater, filter, and etc. i was thinking of putting some tiger barbs in, what other fish can i put in apart from barbs? could i put suckermouth catfish in? clown loaches?

need some suggestions please!
 
Well, there is no such thing as a "suckermouth catfish." I assume you mean plecostomus, in which case one would outgrow your tank, as would clown loaches. If you are looking for bottom feeders, consider cory cats, otos, kuhli loaches, or a rubberlip, clown, or bristlenose pleco (these stay a little smaller).
 
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