Breeding shrimp: how-to guide

Which shrimp breed in freshwater?

Neocaridina and Caridina dwarf shrimp breed fully in freshwater. Females carry eggs under their tail until they hatch as miniature shrimp. Amano shrimp lay eggs in freshwater but the larvae need brackish water to survive — they won’t breed successfully in a standard tank. This guide focuses on Neocaridina and Caridina.

Tank setup

• Size: 20–40 litres is enough for a colony. Larger gives more stability.
• Filter: Sponge filter is ideal — no intake to suck up babies. If using HOB or canister, cover the intake with sponge or mesh.
• Substrate: Inert (sand, gravel) for Neocaridina. Buffering substrate (e.g. fluval stratum) for Caridina to keep pH/KH low.
• Plants and hiding spots: Moss (java, Christmas), dense plants, and wood give cover. Babies hide and graze biofilm.
• Mature tank: Let the tank run 4–6 weeks before adding shrimp. Biofilm and algae build up — that’s food for babies.

Water parameters

Neocaridina: GH 6–8, KH 2–4, pH 6.5–7.5. Many tolerate tap water if it’s not extreme. Caridina: GH 4–6, KH 0–2, pH 5.5–6.5. Usually need RO water + remineraliser. Stability matters more than hitting exact numbers — avoid swings.

Stocking for breeding

Start with 6–10 shrimp, mixed sexes. Females are larger with a curved underbelly; males are smaller and slimmer. Once established, they breed continuously. No special triggers — good water and food are enough.

Feeding

Adults eat biofilm, algae, and supplemental food (shrimp pellets, blanched veg, powdered foods). For breeding, ensure enough food without overfeeding — excess causes ammonia spikes. Babies graze biofilm and fine particles; powdered food or crushed pellets help in sparse tanks.

Raising babies

• Baby shrimp are tiny and hide in moss and plants. Avoid strong flow that could trap them.
• No fish — even small fish will eat babies. Species-only or shrimp-only is best.
• Supplement with powdered food if the tank is new or has little biofilm.
• Water changes: small, frequent (e.g. 10–15% weekly) with drip-acclimated new water to avoid parameter shock.

Common issues

• No babies: Check ratio (need both sexes), water stability, and that females aren’t stressed (e.g. by fish or poor params).
• Babies disappear: Fish predation, or sucked into filter. Use sponge filter or cover intakes.
• Colony crashes: Often a parameter swing, copper (from meds or pipes), or overfeeding. Test water and avoid copper-containing products.

Quick takeaways

• Neocaridina and Caridina breed in freshwater; amano do not.
• Sponge filter, plants, moss, and mature tank set the stage.
• Stable water, no fish, and covered intakes protect babies.