| Cover | May 20, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 20, 2024 |
| Current Fiscal Year End Date | --06-30 |
| Entity File Number | 811-22472 |
| Entity Registrant Name | RiverNorth Opportunities Fund, Inc. |
| Entity Central Index Key | 0001501072 |
| Entity Tax Identification Number | 46-4084978 |
| Entity Incorporation, State or Country Code | MA |
| Entity Address, Address Line One | 360 South Rosemary Avenue |
| Entity Address, Address Line Two | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common shares |
| Trading Symbol | RIV |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
