All fish & shrimp should be drip acclimated. Some people get away without , but it is not humane if you do not drip them in . TDS readings should be taken at the store as well as Gh, Kh. Prime or water conditioner should be added to fish bag with shrimps or fish. Toxic ammonia will be produced quickly.
Asmotic shock is the # 1 killer with livestock transfer.
The cells can explode if the fishes TDS drops too quickly or they can suffocate their cells if the TDS rises too quickly.
If TDS change is large than days or weeks may be necessary to make proper osmotic changes in the organism weather shrimp or fish.
Drip acclimation is just as important to fish as well as shrimp, there is no difference in them. They both can die from osmotic shock.
If the TDS is not that different then there could be other factors like ammonia poisoning in the bag. But without TDS readings you will not know for sure. TDS meters are not expensive , every person keeping fish & shrimp should have one.