The white skirt tetra is the parent fish of the florescent Glo Tetras. Natural skirt come in two variations, the featured here - the white skirt tetra, and the black skirt tetra. One white skirt tetra plus one gene of a jellyfish equals one Glo Tetra. (Zebra danios are the parent fish fo Glo Danios). These are great schooling fish that will grow to about 2 inches and also contrast well with their more colorful cousins. We recommend a few of these with the Glo Tetras.