Common Problems
This knowledge-base content is guidance, not a guarantee. Shrimp outcomes still depend on tank age, maintenance routine, stocking, feeding, genetics, and individual animal behaviour.
Common problems
Many shrimp-keeping problems are caused by instability rather than one dramatic single event. Before changing several things at once, work backwards from what changed most recently and check the simple causes first.
Shrimp dying after a water change
- Check whether temperature was matched properly.
- Check whether remineralisation or source water changed.
- Check whether conditioner, fertiliser, medication, or filter cleaning happened at the same time.
- Check whether the water change was too large for the tank's stability.
Failed moults
- Review GH, KH, TDS, and overall mineral stability.
- Check temperature and oxygen, especially in warm tanks.
- Consider whether the colony is under stress from fish, over-cleaning, or contamination.
- Look at diet consistency, not just occasional feeding.
No breeding or poor shrimplet survival
- Check for predation from fish that may look peaceful but still eat shrimplets.
- Increase cover with moss, plants, hardscape, and biofilm-rich surfaces.
- Avoid aggressive maintenance that strips too much cover or biofilm.
- Remember that a tank may simply need more maturity and stability.
Sudden frantic swimming or unusual behaviour
- Review the last maintenance session or product added to the tank.
- Check ammonia and nitrite immediately.
- Check whether oxygen is low or temperature is too high.
- Look for contamination from sprays, hands, soaps, metals, or unsuitable products.
Algae, pests, and nuisance organisms
Hydra, planaria, detritus worms, vorticella, and pest snails are all discussed online, but correct identification matters. Overfeeding and instability often sit behind many outbreaks. Treating the wrong thing can create a bigger problem than the original issue, especially where snails and other invertebrates are present.
Important note
The information on this page is general guidance only. It is not a substitute for testing your own water, checking your own husbandry, and making decisions based on the real conditions in your aquarium.