4762
Fish were acutely exposed to two sub - lethal ammonia concentrations ( as NH ( 4 ) HCO ( 3 ) ) at pH 7 . 9 : 1 mM for a period of 12 h , identical for all species , and 5 mM for the cyprinids and 1 . 4 mM for the trout for 3 h .
 Chemical: ammonia; Chemical: NH ( 4 ) HCO ( 3 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ammonia; Chemical: NH ( 4 ) HCO ( 3 )