Start with a stable, cycled tank
The single biggest mistake with shrimp is adding them to a tank that has not fully matured. Shrimp are far more sensitive than fish to ammonia, nitrite and sudden parameter swings, so patience up front saves heartbreak. Aim for a tank of around 20 litres or more — small enough to be a manageable nano, large enough that temperature and chemistry move slowly — and let it complete a full nitrogen cycle before a single shrimp goes in. Better still, let it run for a few extra weeks so a film of biofilm and algae builds up for the shrimp to graze.
For tank options sized for a colony, see our best shrimp tank picks, and the aquariums hub for the wider range.
Neocaridina or Caridina? Choose first
The two main shrimp groups want opposite water, so decide before you buy anything:
- Neocaridina (cherry shrimp and their red, blue, yellow and orange variants) are the hardy beginner's choice. They thrive in neutral to slightly alkaline, moderately hard water — often straight dechlorinated tap water — and forgive minor mistakes.
- Caridina (crystal, bee and taiwan bee shrimp) are the connoisseur's choice: they need soft, acidic water, usually built from remineralised RO water sitting over an active, pH-buffering aqua soil.
Do not try to keep both in one tank — their ideal parameters do not overlap. Pick a group and build the whole setup around it.
A gentle filter and shrimp-safe substrate
Baby shrimp are minute and get sucked into standard filter intakes with ease. A sponge filter driven by an air pump is the classic, foolproof choice — it provides biological filtration, gentle flow, and a huge surface for shrimplets to graze, with no dangerous intake. If you prefer a hang-on or internal filter, fit a fine pre-filter sponge over the intake and keep the flow gentle.
For substrate, Neocaridina are happy on inert sand or fine gravel, while Caridina need an active soil that buffers the water soft and acidic — our substrate hub explains the difference. Add plenty of moss, easy plants and leaf litter; shrimp spend all day picking food off surfaces.
Keep copper out and parameters steady
Two things kill shrimp colonies: copper and instability. Copper is toxic to all invertebrates at trace levels harmless to fish, and it lurks in many fish medications, some fertilisers and old plumbing — only ever add products clearly labelled invert-safe or shrimp-safe. Stability is the other half: shrimp cope with a wide range of values far better than they cope with those values changing quickly.
- Keep temperature steady in the low-to-mid 20s °C — most shrimp do not need a heater in a warm room, but one prevents swings.
- Do small, frequent water changes rather than large occasional ones, and always match temperature and treat for chlorine.
- Feed sparingly — a little specialised shrimp food a few times a week; a mature tank feeds them the rest.
Adding shrimp and watching them thrive
Introduce a small starter group into the mature tank and resist the urge to overstock — a healthy colony breeds fast and fills the space itself. Within weeks a settled Neocaridina colony will be berried with eggs and grazing contentedly. From there the routine is minimal: light feeding, gentle weekly water changes, and the occasional top-up. Keep the wider maintenance light-handed, and a shrimp tank becomes one of the most rewarding, low-effort setups in the hobby.