Given the question: Etheostoma striatulum the striated darter is a species of darter endemic to the eastern United States. It occurs in the Duck River system in Tennessee. It inhabits rocky pools in creeks. This species can reach a length of 5.6 centimetres (2.2 in) TL though most only reach about 3.8 centimetres (1.5 in). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer is:
Animal