I read in another thread of yours that you want fish for your birthday. Well, instead of asking for fish, why don't you ask for ornaments, caves and things for your fishies to hide in and some plants, fishies love weaving in and out of plants and some even like to nibble on them in between meals.
You could cut a cocnut shell in half,clean out all the meat from inside,cut a notch in the shell for your fish to fit through and then boil the shell in several changes of water before placing it in your tank