When ordering livestock please select the box size under the dropdown menu LIVESTOCK and add it to your cart for accurate overnight (1-2 days) shipping costs. A small box can take 1-2 bags and a medium box 6 bags. One bag fits max 10 small (1-3cm) fish or max 2 medium (3-5cm) fish or max 1 large (>5cm) fish. ONE SPECIES PER BAG. Eg: One bag of 10 neon tetra.