Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
May 29, 2020
Jun. 30, 2019
Document And Entity Information      
Entity Registrant Name Blue Star Foods Corp.    
Entity Central Index Key 0001730773    
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business Flag true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   17,557,575  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019