53442
" Synalpheus " is a genus of snapping shrimp of the family Alpheidae , presently containing more than 100 species ; new ones are described on a regular basis , and the exact number even of described species is disputed .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None