2 clowns would form a pair, female clowns (even ocelaris/percs) get too big for a 10 gallon IMO.. a single clown would probably work in a 10 though
for the 3 look at maybe a clown goby or one of the nano gobies (trimma, oceanops, etc)
for the 3 look at maybe a clown goby or one of the nano gobies (trimma, oceanops, etc)
