im new here and i had piranas before but they passed on and i got 2 baby red bellys tonight and i have oxygen bubbles on and they swim downwards in them... is that normal??? they r the size of dimes and i have them in a 30 gallon tank.. they told me to feed the flakes right now but i was thinkin of gettin guppys for them.. anyone have any ideas?? im kinda a nervois mom!! lol *GOLDFISH*