26385
" Ctenobrycon spilurus " , the " silver tetra " , is a species of tropical freshwater fish sometime referred to as the " silver dollar tetra " .
 freshwater fish
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 freshwater fish