9700
In this study , groups of sub - adult Arabian killifish ( Aphanius dispar ) were exposed to either 0 , 0 . 03 , 0 . 3 or 3 mu g / L fluoxetine hydrochloride for 7 days and their swimming behaviour and social interactions videotaped in a circular arena .
 fluoxetine, hydrochloride
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 fluoxetine, hydrochloride