91255
Some of the salmonids that infects ( bull trout , cutthroat trout , and anadromous forms of rainbow trout - steelhead ) are already threatened or endangered , and the parasite could worsen their population decline .
 bull trout
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:
 bull trout