Freshwater Shrimp Care Hub: Neocaridina and Caridina Basics
New to freshwater shrimp? This hub explains the two main groups, Neocaridina and Caridina, the water they each need, and how to keep a colony thriving from a fresh setup through a mature, breeding tank. Learn the numbers that matter and the signs of a happy shrimp.
Quick answer
Neocaridina (like cherry shrimp) are the hardy beginner choice, thriving in neutral to slightly hard water, while Caridina (like Crystal Red and Taiwan Bee) need soft, acidic water and are more sensitive. Pick one group, match its water, keep parameters rock-steady, and feed lightly. Stability matters far more than chasing perfect numbers.
New to freshwater shrimp? This hub explains the two main groups, Neocaridina and Caridina, the water they each need, and how to keep a colony thriving from a fresh setup through a mature, breeding tank.
Meet the two groups
Almost every dwarf shrimp in the hobby is either Neocaridina davidi or a Caridina species. Neocaridina come in red, yellow, blue, green and more, and forgive beginner mistakes. Caridina include the striking Crystal Red/Black and the pricey Taiwan Bee lines, but they demand precise soft-water conditions. Keeping the two in separate tanks avoids unwanted crossbreeding and conflicting water needs.
Setting up (aquatic-setup)
Start with a cycled, matured tank of at least 20 litres so parameters swing slowly. Add plenty of moss, botanicals and a sponge filter, which grows biofilm shrimp graze on and never sucks up shrimplets. For Caridina, use an active aquasoil that buffers pH down; for Neocaridina, inert gravel is fine. Let algae and biofilm develop for a few weeks before adding livestock.
Healthy shrimp graze constantly on biofilm and algae across moss and hardscape.
Bringing shrimp home (stabilization)
Newly added shrimp are most vulnerable to sudden changes in TDS and pH. Drip-acclimate slowly over one to two hours so their internal chemistry adjusts. Add only a small starter group at first and watch for a week before adding more. Molting problems, where a shrimp gets stuck in its old shell, often trace back to a rushed acclimation or a swing in mineral levels.
Slow drip acclimation over 1-2 hours protects shrimp from parameter shock.
A mature, breeding colony (aquatic-mature)
When water is stable and food is steady, Neocaridina breed readily. A berried (egg-carrying) female fans eggs under her tail for about three to four weeks before releasing fully formed miniatures. Do nothing special beyond keeping parameters steady and offering biofilm-rich surfaces. Caridina breed on the same principle but only reward genuinely soft, stable water.
Feeding and daily checks
Shrimp mostly eat the biofilm and algae already in the tank, so feed only two or three times a week, an amount they clear within a couple of hours. Overfeeding fouls the water and breeds planaria. Each day, glance for active grazing, good colour and successful molts, and remove any uneaten food.
Quick FAQs
Can I keep Neocaridina and Caridina together? You can technically house them together only if the water suits both, which is rare. More importantly, some colour forms crossbreed into muddy offspring, so most keepers separate them.
How many shrimp can I start with? Begin with 10-15 in a cycled 20+ litre tank. They breed quickly, so a small start becomes a colony within months.
Do shrimp need a heater? In most homes room temperature is fine, but if your room drops below 18C or swings a lot, a small heater set around 22C keeps things stable.
Why did my shrimp turn white and stop moving? A shrimp that is opaque, white and motionless has usually died; a shed molt is clear and translucent. Muscle turning white in a living shrimp can signal severe stress and needs a water test.