Subsequent events (Details Narrative) ¥ in Millions |
1 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Aug. 01, 2026
USD ($)
|
Aug. 01, 2026
CNY (¥)
|
Jun. 25, 2026 |
Oct. 01, 2024
USD ($)
|
May 10, 2024
USD ($)
shares
|
Jul. 31, 2026
USD ($)
shares
|
Mar. 31, 2026
shares
|
Mar. 30, 2026 |
Oct. 15, 2025
shares
|
Oct. 10, 2025
shares
|
Mar. 31, 2025
shares
|
Dec. 17, 2024 |
Jan. 31, 2022 |
|
| Subsequent Event [Line Items] | |||||||||||||
| Shares issued to Wuxi Shareholders | 480,000 | ||||||||||||
| Number of shares issued, value | $ | $ 54 | $ 96 | |||||||||||
| Preferred shares, shares authorized | 5,000,000 | 5,000,000 | 5,000,000 | ||||||||||
| Fujian Pingtan Ocean Fishery Group Co. Ltd [Member] | |||||||||||||
| Subsequent Event [Line Items] | |||||||||||||
| Equity method investment, ownership percentage | 3.00% | 3.00% | 3.00% | 3.00% | |||||||||
| Series B Preferred Stock [Member] | |||||||||||||
| Subsequent Event [Line Items] | |||||||||||||
| Preferred shares, shares authorized | 4,000,000 | ||||||||||||
| Subsequent Event [Member] | |||||||||||||
| Subsequent Event [Line Items] | |||||||||||||
| Maturity date start | Mar. 31, 2026 | ||||||||||||
| Maturity date end | Sep. 30, 2026 | ||||||||||||
| Preferred shares, shares authorized | 5,000,000 | ||||||||||||
| Aggregate consideration amount | $ | $ 4,500,000 | ||||||||||||
| Initial installment description | The first installment of USD 0.9 million, representing 20% of the total consideration, has been paid in early August 2026, with the remaining balance payable in installments per the contractual payment schedule within one year. | The first installment of USD 0.9 million, representing 20% of the total consideration, has been paid in early August 2026, with the remaining balance payable in installments per the contractual payment schedule within one year. | |||||||||||
| Disposed subsidiaries fair value | $ 8,200,000 | ¥ 56.9 | |||||||||||
| Subsequent Event [Member] | Fujian Pingtan Ocean Fishery Group Co. Ltd [Member] | |||||||||||||
| Subsequent Event [Line Items] | |||||||||||||
| Equity method investment, ownership percentage | 3.00% | 3.00% | |||||||||||
| Subsequent Event [Member] | Series B Preferred Stock [Member] | |||||||||||||
| Subsequent Event [Line Items] | |||||||||||||
| Shares issued to Wuxi Shareholders | 666,667 | ||||||||||||
| Number of shares issued, value | $ | $ 500,000 | ||||||||||||
| Preferred shares, shares authorized | 4,000,000 | ||||||||||||