Thanks, can you give this edited save a try.
After comparing the data values; it appears to have been an issue with JsonAssets, & RSV.
Ridgeside Village apparently uses JsonAssets to add new items. But the huge flaw with JA; is that it randomly assigns values to the items it creates. As such, those randomly assigned values can sometimes shift around.
This was the case here. Some of your fishponds were filled with random items instead of the proper fishpond creatures; all due to the item value shifting. So, I swapped them back to the correct values per the JA index file in your save.
This is what I documented of your fishponds, and/or switched to based on the output items.
Code:
1. blobfish
2. stingray
3. 3032 forest amancay should be 3028 fairytale lionfish
4. midnight squid
5. 3033 forest halva should be 3029 fixer eel
6. 3019 deep ridge angler should be crimson spiked clam 3014
7. 3085 paradise rangpur sapling should be pebble black crab 3086
I did a quick test of the fishponds in-game, and they all work for me now. But, let me know if you have any further issues.