Please answer the following question: Dianema - Dianema is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family. The type species for this genus is Dianema longibarbis. The name is derived from the Greek di meaning two and nema meaning filament. The two species of Dianema share approximately the same distribution and are found in the Amazon River and lower courses of its tributaries. Dianema species have the habit of swimming midwater as opposed to the bottom as in most callichthyids. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Animal