i just received a 2.5 gallon tank for christmas with a heater and filter. i have plenty of live plants to store in it. i am trying to find something to put in it. the only things i have seen on other websites are bettas and goldfish. i do not want either of these in it. i was wondering if anyone has suggestions as to what i could put in such a small tank. i also have a 29 gallon that i could transfer the fish to after it got too big. I really want to get some kind of invert to put in it, are there any that would survive in such a small environment? if not ho many tetras would fit?