Freshwater Shrimp:
A Beginner’s Guide

Why Keep Freshwater Shrimp?

Shrimp are the aquarium hobby’s best kept secret. A colony of cherry shrimp grazing on algae, carrying eggs, and swarming a food pellet is genuinely captivating to watch. They add almost no bioload — 20 shrimp barely register on a test kit — eat constantly, cleaning algae and biofilm from every surface, and breed prolifically in the right conditions. For small or planted tanks, they are close to ideal tankmates.

The shrimp hobby has its own dedicated community with dozens of colour grades, selective breeding programs, and specialist species. But you don’t need any of that to start. A beginner can set up a thriving shrimp colony in a small planted tank for very little money and very little effort.

Cherry Shrimp (Neocaridina davidi)

Cherry shrimp are the gateway species for the shrimp hobby — hardy, adaptable, and available in a wide range of colour grades from light pink (cherry) through vivid red (painted fire red) to near-black (black rose). They tolerate a wide range of water parameters, breed readily in established tanks, and coexist peacefully with most small, peaceful fish.

Water parameters: pH 6.5–7.5, GH 6–15 dGH, KH 2–8 dKH, temperature 18–28°C. Neocaridina are the most forgiving of the popular shrimp species — they can tolerate moderately hard tap water without mineralisation, making them far more accessible than Caridina species.

Breeding: Females carry green or yellow eggs beneath their tail for 25–35 days until juveniles hatch as miniature adults. No larval stage, no brackish water requirement — they breed entirely in freshwater. A colony of 10 shrimp can grow to 100+ within 6 months under good conditions.

Colour grades: Cherry → Sakura → Fire Red → Painted Fire Red (ascending quality/price). Higher grade shrimp have denser, more opaque colouration. Functionally identical in care requirements.

Amano Shrimp (Caridina multidentata)

Amano shrimp are larger than cherry shrimp (reaching 2 inches) and significantly more effective at eating algae — particularly hair algae and thread algae that cherry shrimp largely ignore. They were popularised by legendary aquascaper Takashi Amano for exactly this reason: a group of amano shrimp in a planted tank is one of the most effective natural algae control measures available.

Amanos are translucent grey with rows of red-brown dots along their sides. They do not breed in freshwater — larvae require brackish conditions to develop, so your colony won’t grow without deliberate effort. This is actually useful for beginners: the population stays manageable. Keep them in groups of at least 5; alone they become shy and ineffective.

Water parameters: pH 6.5–7.5, GH 6–15 dGH, temperature 18–26°C. Hardy and adaptable. Generally too large for small fish to eat, making them safer tankmates than cherry shrimp.

Crystal / Bee Shrimp (Caridina cantonensis)

Crystal Red and Crystal Black shrimp are striking invertebrates with vivid white-and-red or white-and-black banding. They are significantly more demanding than Neocaridina species and represent the next step up in difficulty. Caridina require soft, slightly acidic water — ideally remineralised RO water with a specific GH and KH range — and are far less tolerant of parameter swings.

Water parameters: pH 5.8–6.8, GH 4–6 dGH, KH 0–1 dKH, temperature 20–24°C. The near-zero KH requirement means most tap water is unsuitable without significant treatment. Not recommended for beginners unless you have prior shrimp experience.

Ghost Shrimp (Palaemonetes paludosus)

Ghost shrimp are transparent, cheap, and widely available. They are primarily sold as feeder shrimp for fish, but can be interesting aquarium inhabitants in their own right in a species-only tank. Hardier than they appear, they tolerate a wide range of water conditions and are completely peaceful. The main limitation is their transparency — they are difficult to observe — and their tendency to be eaten by any fish large enough to fit them in its mouth.

Tank Setup for Shrimp

Shrimp can be kept in tanks as small as 5 gallons, though 10–20 gallons gives more stability and room for a larger colony. The most important elements are:

• Dense planting: Java moss, java fern, and anubias provide grazing surfaces covered in biofilm, essential hiding spots, and areas for shrimp to moult safely. A planted tank is not required but dramatically improves shrimp health and breeding success.
• Sponge filter: Shrimp, especially juveniles, can be sucked into HOB filters. A sponge filter is the safest option; it also grows biofilm that shrimp graze on. If using an HOB, cover the intake with a foam pre-filter.
• No sharp decor: Shrimp moult their exoskeleton regularly. Sharp edges can trap and injure them during this vulnerable period.
• Lid: Shrimp are escape artists, particularly after moulting. A well-fitted lid prevents losses.

Water Parameters

For Neocaridina (cherry shrimp and their colour variants), aim for: pH 6.5–7.5, GH 6–15 dGH, KH 2–8 dKH, TDS 150–250 ppm, temperature 18–28°C. Stability is more important than hitting exact numbers — shrimp cope with suboptimal parameters far better than they cope with sudden swings. Cycle the tank fully before adding shrimp; they are sensitive to ammonia even at low levels.

Feeding

In a planted tank with existing algae and biofilm, shrimp often need little supplemental feeding — they graze continuously on natural food sources. In a cleaner tank, feed small amounts 3–5 times per week. Purpose-made shrimp foods (Shrimp King Complete, GlasGarten Shrimp Dinner) contain the minerals and nutrients shrimp need. Blanched vegetables — courgette, spinach, cucumber — are relished and provide variety.

Remove uneaten food after 4–6 hours to prevent ammonia spikes. Shrimp are small — one small pellet feeds a colony of 20 adequately. Overfeeding is a common mistake that degrades water quality rapidly in small shrimp tanks.

Compatible Tankmates

Adult cherry shrimp can coexist with very small, peaceful fish: ember tetras, pygmy corydoras, otocinclus, and endlers will largely ignore adult shrimp. Juvenile shrimp will be eaten by almost any fish, however, so a species-only setup produces the most successful colonies. Amano shrimp are large enough to be safer with a broader range of community fish. Avoid bettas, gouramis, cichlids, angelfish, and any fish with a mouth large enough to eat a shrimp.

Breeding Cherry Shrimp

Cherry shrimp breed without any special intervention beyond good water quality. A healthy colony of 10 shrimp will produce dozens of offspring within 3–4 months. The process: a female moults (sheds her exoskeleton), releasing pheromones that trigger males to swim frantically searching for her — this is called the “shrimp dance.” After mating, she carries 20–30 eggs beneath her tail for 3–5 weeks, fanning them with her pleopods to oxygenate them. Hatchlings emerge as tiny, fully-formed miniature shrimp.

Providing java moss or other fine-textured plants gives juveniles hiding spots and grazing surfaces that dramatically improve survival rates. The biggest threat to juveniles is being trapped in filter intakes — always use a pre-filter on any power filter in a breeding colony.

Summary

Cherry shrimp are the ideal starting point for shrimp keeping — affordable, hardy, beautiful, and genuinely useful as algae eaters. Set up a 10-gallon planted tank with a sponge filter, cycle it fully, add a colony of 10 to 15 shrimp, feed lightly, and maintain stable water parameters. Within a few months you’ll have a thriving, self-sustaining colony that will be one of the most engaging parts of your aquarium hobby.