E. tricolor

E. tricolor may refer to:
 * Ecsenius tricolor, the Derawan combtooth-blenny, a fish species found in the western central Pacific Ocean, around the Philippines and Borneo
 * Egretta tricolor, the tricolored heron or Louisiana heron, a bird species found from the Gulf states of the United States and northern Mexico south through Central America and the Caribbean to central Brazil and Peru
 * Epipedobates tricolor, the phantasmal poison frog, a frog species found in Ecuador
 * Epthianura tricolor, the crimson chat, a bird species found in Australia
 * Erythrura tricolor, the tricoloured parrotfinch, a bird species found in Indonesia and East Timor