What fish should i get next?

i have a 4 foot buy 2.5 foot tank buy 2.5 tall i have 8 guppies 2 mollies 3 platies 2 pacific blue eyes 2 electric yellows 4 black widow 2 convicts 1 swordtails 4 neon tetra and 3 blue peas i now that sounds a lot but there almost all small fish and i now that is a werid mix of fish and they should be eating each other but i have had them together for about 6 months and none have been eaten or anything but i don't no what to get next any ideas