v3.26.1
N-2
Aug. 14, 2026
Cover [Abstract]  
Entity Central Index Key 0001501072
Amendment Flag false
Document Type POS EX
Entity Registrant Name RIVERNORTH OPPORTUNITIES FUND, INC.
Entity Address, Address Line One 360 South Rosemary Avenue, Suite 1420
Entity Address, City or Town West Palm Beach
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33401
City Area Code (303)
Local Phone Number 623-2577
No Substantive Changes, 462(c) false
Exhibits Only, 462(d) true
Entity Well-known Seasoned Issuer No
Entity Emerging Growth Company false
Business Contact [Member]  
Cover [Abstract]  
Entity Address, Address Line One 360 South Rosemary Avenue, Suite 1420
Entity Address, City or Town West Palm Beach
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33401
Contact Personnel Name Marcus L. Collins