Freshwater Shrimp Keeping: Complete UK Guide (2026)

Freshwater shrimp are my favourite invertebrates in the hobby, and they have earned that spot by being genuinely rewarding to keep. A tank of cherry shrimp over a mossy substrate is hypnotic — they are constantly moving, constantly grazing, and they reward good husbandry with colour and numbers. After fifteen years of keeping them I still think most beginners underestimate how good a dedicated shrimp tank can be.

This guide draws on data from Seriously Fish^[1][2], FishBase^[3], and peer-reviewed work on copper toxicity in invertebrates^[4], cross-referenced with a decade and a half of running UK shrimp tanks from soft Scottish water to hard London tap.

We stock several shrimp species — browse our shrimp range for tracked UK delivery of starter colonies and individual specimens.

Why shrimp are the best invertebrate for home aquaria

Before I pick my shrimp apart by species, a quick pitch for why they earn tank space over other invertebrates.

They actually do something. Unlike most ornamental snails that drift across the glass, shrimp are constantly grazing, interacting, and displaying. A settled colony is one of the most active things you can put in an aquarium.

Low bioload, high visual impact. A 20-shrimp colony produces less waste than a single 3cm tetra. Yet visually they are striking — especially Neocaridina colour morphs like fire red, blue dream, yellow neon, and rili.

They breed themselves. Neocaridina reproduce readily in ordinary tap water without any fry-rearing setup. Cherry shrimp produce fully-formed miniatures with no larval stage, so survival rates are excellent in a planted tank.

They help the tank. Shrimp clean up uneaten food, graze biofilm, and keep plants free of detritus. They are not a replacement for maintenance, but they complement it.

They make you a better fishkeeper. Shrimp react to parameter swings before fish do. If your shrimp are behaving normally, your tank is stable. A failing shrimp colony is an early warning that something is off.

The three main shrimp groups

Understanding which group you are buying is the single most important decision. Get this wrong and everything else in the guide is moot.

Neocaridina — the beginner group

• Species: Neocaridina davidi and colour morphs (cherry, fire red, blue dream, yellow, rili, carbon)
• Water: pH 6.8-7.8, GH 6-12, KH 2-8, temp 18-28 C
• UK tap compatibility: Excellent — most regions work as-is
• Difficulty: Beginner

Neocaridina are the group I recommend to every first-time shrimp keeper. They are hardy, colourful, cheap, breed freely, and tolerate the wide parameter variation you get in typical UK tap water^[1]. Our full cherry shrimp care guide covers the Neocaridina subgroup in detail.

Colour morphs all interbreed, so pick one and stick with it. Breeding fire reds with blue dreams produces muddy brown offspring within two generations.

Caridina — the specialist group

• Species: Caridina cantonensis (crystal red, crystal black, taiwan bee, king kong, panda)
• Water: pH 5.5-6.8, GH 4-6, KH 0-2, temp 20-24 C
• UK tap compatibility: Poor — needs RO water with minerals
• Difficulty: Intermediate to advanced

Caridina are stunning but fussy. They need soft acidic water — below pH 7, with low KH — which almost no UK tap water provides without modification. A Caridina setup typically requires RO water, active substrate like ADA Amazonia, remineraliser (Salty Shrimp GH+, no KH), and tighter parameter control. Crystal red shrimp are the gateway species here.

Do not start with Caridina. Keep Neocaridina for a year first, then move on if you want the challenge.

Amano — the algae-eating group

• Species: Caridina multidentata (formerly C. japonica)
• Water: pH 6.5-7.8, GH 6-10, KH 2-6, temp 20-27 C
• UK tap compatibility: Excellent
• Difficulty: Beginner

Amanos are the original "algae shrimp"^[2]. They reach 4-5cm (twice the size of cherries), have a translucent body with a dashed lateral line, and are the most effective algae eaters in the freshwater hobby. They eat hair algae, green spot algae, and diatoms that cherry shrimp ignore entirely.

Downsides: they do not breed in freshwater (larvae need brackish conditions), so what you buy is what you keep. They also cost more — usually £3-£5 per shrimp vs £1.50-£3 for cherries. See our full Amano shrimp care guide.

Quick comparison

Water chemistry for shrimp

Shrimp are more demanding of water quality than most freshwater fish, but the actual parameter windows for Neocaridina and Amano species are generously wide. The challenges are specific.

The three things that actually kill shrimp

1. Copper. Covered above. Zero copper, ever. Double-check fertilisers and never medicate the tank
2. Ammonia and nitrite. Shrimp cannot tolerate any measurable ammonia or nitrite. A cycled tank is non-negotiable — see our first tropical tank guide for how to cycle properly
3. Sudden parameter swings. Shrimp molt to grow, and a sudden GH or TDS swing during a molt causes failed molts (stuck shell, death). Small, frequent water changes beat large occasional ones

The three things new shrimp keepers get wrong

1. Chasing pH. Shrimp do not care about hitting exactly 7.2 — they care that pH does not swing. Stop dosing pH buffers
2. Overfiltering. Shrimp live in calm water. A high-turnover canister filter can stress them, exhaust small babies, and reduce biofilm. Sponge filters are preferred
3. Overfeeding. Shrimp eat far less than fish. A once-daily pinch of shrimp food plus blanched veg once or twice a week is plenty

Testing kit for shrimp keepers

For detailed water chemistry explanation, see our aquarium water chemistry guide.

UK regional water notes

• London / SE England: Hard, alkaline tap water. Perfect for Neocaridina and Amano, wrong for Caridina (needs RO mixing)
• Midlands / East: Medium hardness. Ideal for all common shrimp
• NW England / Wales: Soft-medium. Add a pinch of Salty Shrimp GH+ per water change to ensure adequate calcium
• Scotland / Pennines: Very soft, sometimes low TDS. Needs remineralisation for Neocaridina, naturally suited to Caridina with RO/minerals

Food and feeding

Shrimp are omnivorous grazers^[1]. Most of their diet in a planted tank comes from biofilm — the microscopic film of bacteria, algae, and detritus that coats every surface. This is also why a brand-new, sterile tank is a poor shrimp environment — there is nothing to graze.

Daily staple

Let biofilm be the base. Supplement with a quality shrimp-specific food 3-5 times a week — Shrimp King Complete, Hikari Shrimp Cuisine, or Dennerle Shrimp King. A small pinch that 15-20 shrimp finish in 20 minutes is the right amount.

Vegetables (2-3 times a week)

• Blanched spinach or courgette (boiled 1-2 minutes, then dropped in cool)
• Blanched green beans
• Blanched carrot slices
• Remove after 4-6 hours if uneaten — leftover veg causes ammonia spikes

Protein (once a week maximum)

• Frozen bloodworm (a single worm per shrimp)
• Commercial shrimp protein foods (Hikari Crab Cuisine, Shrimp King Protein)

Too much protein causes failed molts. Think of protein as a weekly treat, not a staple.

Algae wafers for Amano

Amanos benefit from a weekly algae wafer or sinking pellet if the tank is spotless. In a newer tank with visible algae they often do not need supplementation at all.

Molting and calcium

Shrimp molt every 3-8 weeks as they grow. The old shell is usually left on the substrate — do not remove it. Shrimp eat the empty shell to reclaim calcium, and seeing the discarded shell means a successful molt.

Failed molts (shrimp stuck half-in, half-out of the old shell) almost always trace to one of three causes: low GH (not enough calcium), sudden parameter swing during molt prep, or excess protein in the diet. Stable water with GH 6-10 prevents 95% of molt failures.

Tank mates — what is safe

This is where most beginner shrimp keepers slip up. The safe list is shorter than you might hope.

Confidently safe

• Nerite snails — completely harmless, excellent algae crew alongside shrimp
• Otocinclus — tiny algae eaters, no threat even to shrimplets
• Mystery snails — large but peaceful
• Pygmy corydoras — too small to cause trouble (full-size corys occasionally eat shrimplets)
• Other shrimp species (Neocaridina + Amano mix happily)

Generally safe with caveats

• Small tetras (ember tetras, neons, celestial pearl danios) — ignore adult shrimp, will eat shrimplets
• Harlequin rasboras — peaceful, will pick off newborns
• Honey gouramis — often ignore adults, predate tiny young

If you want a shrimp colony to thrive and breed, a species-only tank is the best choice. Mixed fish-and-shrimp communities work but rarely produce visible population growth because shrimplets get eaten before they grow out.

Do not combine with shrimp

• Angelfish — will hunt and eat them
• Cichlids of any size
• Large gouramis (pearl, blue, gold, opaline)
• Loaches of any kind — shrimp specialists
• Bettas — individual-dependent, usually predatory
• Guppies and livebearers — surprisingly effective shrimplet predators
• Plecos (common) — can rasp at slow-moving shrimp
• Goldfish — wrong temperature anyway

Breeding shrimp

The best thing about Neocaridina: you do not really "breed" them, you just keep them alive and they breed themselves^[1].

Neocaridina breeding (easy mode)

Requirements: stable water, plenty of plants and moss, minimal fish predation, adequate food. That is genuinely it. Expect:

• Sexual maturity at 4-5 months
• Saddle (developing eggs visible through the shell above the ovaries) appears on mature females
• After mating, female carries 15-30 eggs under the tail for 25-35 days
• Eggs are yellow/green, gradually darkening as eyes form
• Fully-formed 2mm shrimplets are released — no larval stage

From 10 starter shrimp you can easily have 100+ within a year. I know a keeper who started a 30-litre tank with 15 cherry shrimp and had to give away 400 a year later.

Caridina breeding (harder)

Same direct-to-miniature reproduction, but with tighter water chemistry requirements. Caridina carrying eggs are more sensitive to parameter changes than Neocaridina, and eggs are more commonly dropped under stress. Soft acidic water is essential, as is consistent TDS within a 10 ppm window.

Amano breeding (near-impossible at home)

Amanos release larvae that need brackish water (salinity 17-35 ppt) to survive, then return to freshwater to mature. Replicating this at home involves separate larval tanks, saltmix, specific feeding schedules, and weeks of water adjustments. A small number of UK keepers have bred them in captivity but it is a dedicated project, not a casual side-effect of a community tank.

Colour selection

If you want vivid fire reds rather than the muddier offspring that eventually appear in any Neocaridina colony, cull young shrimp that show pale or patchy colour — move them to a separate tank or rehome. Consistent selection over 5-6 generations deepens colour dramatically.

Common problems and how to fix them

Shrimp hiding constantly

Usually stress. Check: predatory tank mates, recent water change, strong filter current, or a new bottle of fertiliser. Remove the stressor and they reappear within a week.

Sudden mass die-off

Copper contamination until proven otherwise. Did you add a new plant fertiliser? Did a fish treatment get poured in the wrong tank? Did anyone add tap water without dechlorinator? Emergency: 70% water change, add Seachem Cuprisorb if available, remove any dead shrimp.

Slow, gradual decline

Old age if the population is stable. Parameter drift if not — test GH, KH, pH, and TDS. A tank that was fine in month one can develop issues if KH drops and pH becomes unstable.

Molting failures

Raise GH to 8-10 with a mineral supplement. Reduce protein in the diet. Check water changes are not swinging TDS suddenly — small and frequent wins.

White ring of death

A visible white band between the shell and body before molting is the unfortunately-named "white ring of death" — the molt is stuck. Rarely recoverable. Prevent with stable water and adequate calcium.

UK delivery and acclimation

Shrimp are shipped in breather bags or oxygen-packed bags with cushioning material (usually java moss). Between November and March every order includes heat packs. Orders dispatch Monday-Wednesday for tracked delivery.

When your shrimp arrive:

1. Float the sealed bag for 20 minutes to equalise temperature
2. Drip-acclimate over 60-90 minutes — longer than for fish, because shrimp are sensitive to TDS change. Use airline tubing with a loose knot at 1-2 drips per second
3. Net the shrimp out — do not dump the transport water in
4. Dim the lights for 12-24 hours to reduce stress
5. Do not feed for the first 24 hours

Newly arrived shrimp often hide for a day or two. By day three they should be out and grazing visibly. If a few die in the first week, that is normal — transport stress catches the weakest. Mass die-off after a week points to your tank, not the shrimp.

Why buy from us

Every shrimp we ship comes from holding tanks we run personally. We do not ship straight from the wholesaler — shrimp are observed for at least a week before dispatch, which is when transport-related mortality typically surfaces. We pack with oxygen, java moss cushioning, and insulated boxes. Heat packs November through March.

If shrimp arrive dead or die within 48 hours of acclimation, we replace or refund — no arguments.

Starter colonies of 10 give you a real population foundation. Caridina and rarer Neocaridina morphs (carbon rili, chocolate) ship in smaller groups by prior arrangement. Browse our shrimp listings for current availability.

Answers to common questions

Are shrimp hard to keep?

Neocaridina and Amano species are genuinely easy — easier than many tropical fish once you understand the copper rule and cycle your tank. Caridina are a step up in difficulty due to their soft-water needs. For first-time shrimp keepers, cherry shrimp in a planted 20-litre nano is the ideal starting point.

Do shrimp need a filter?

Yes, but a gentle one. Sponge filters driven by air pumps are ideal — they oxygenate, provide biofilm-covered surfaces for shrimp to graze, and cannot suck in shrimplets like canister intakes can. For tanks over 50 litres, a small internal or external filter with a sponge-covered intake also works.

Can shrimp live without a filter?

In a heavily planted, lightly stocked, mature tank, yes — some keepers run filterless shrimp bowls successfully. This is not a beginner technique. Stick to a sponge filter until you have a year of shrimp experience.

How often should I change water in a shrimp tank?

Small weekly water changes beat larger fortnightly ones. I do 10-15% weekly, matched temperature and TDS, with pre-aged water when possible. Never replace more than 25% in one go on an established shrimp tank — the TDS swing causes stress.

Do shrimp eat fish poop?

No. Common myth, not true. See the FAQ above for detail.

Will shrimp breed with fish in the tank?

They will breed, but shrimplets will get eaten faster than the colony grows. For visible population growth, species-only is the answer.

Are cherry shrimp reef-safe... wait, wrong article

Freshwater species only. Cherry shrimp cannot live in saltwater. Amano larvae need brackish conditions, but the adults are fully freshwater.

How many shrimp should I start with?

Ten is the minimum for a viable breeding colony. Fifteen is better — gives you a buffer against early losses. Twenty is ideal for a tank around 30-40 litres, where you see meaningful colony activity from day one.

Can I keep shrimp in a cold-water tank?

Neocaridina and Amano tolerate unheated UK room temperatures in most houses. Below 15 degrees, activity and breeding slow dramatically. Caridina need warmer, stable 20-24 degrees.

Why are my shrimp pale?

Stress, diet, or genetics. Stressed cherry shrimp lose colour within hours and regain it when settled. Low-protein diets cause gradual fading. Culled cheap cherries from mixed stock tend toward muddy colour as generations pass — selective breeding restores it.

Do shrimp need light?

Plants do, shrimp do not care either way. A standard planted-tank light on 7-9 hour timer is fine. Avoid 24-hour lighting (stresses them) and complete darkness (kills plants and biofilm).

Can I add shrimp to a new tank?

Cycle the tank first. Shrimp do not tolerate measurable ammonia or nitrite. Use bottled bacteria or seeded filter media to speed things up, but never skip cycling.

Setting up a dedicated shrimp tank — step by step

For anyone building a shrimp-only tank from scratch, this is the build order I follow.

Tank and equipment

• 20-40 litre tank — small enough to be manageable, big enough for a stable colony
• Sponge filter driven by a gentle air pump. Corner or double-sponge models work well
• 25-50 watt adjustable heater (or unheated in warm rooms)
• Basic LED light — 7 hours a day on a timer
• Inert gravel or sand substrate for Neocaridina; active aquasoil for Caridina
• Lid — shrimp do not jump, but reduces evaporation and keeps out curious cats

Hardscape and plants

• Driftwood — provides biofilm, tannins, and grip surfaces. Pre-soak for a week before adding
• Java moss — the core of any shrimp tank. Build up a handful and let it spread
• Anubias and cryptocoryne — structural plants
• Indian almond leaves — 1 leaf per 20 litres, replace monthly. Tannins, anti-bacterial, and shrimp graze biofilm off the decaying leaves
• Alder cones — extra tannin release for Caridina setups

See our live plants for beginners guide for the full plant rundown.

Cycling the tank

1. Set up fully, fill with dechlorinated water
2. Add ammonia or seeded filter media
3. Wait 4-6 weeks for full cycle (see our first tropical tank guide)
4. Let plants establish for a further 2-4 weeks before shrimp
5. A mature, biofilm-rich tank has fuzzy green growth on decor and glass — this is the right environment

Adding your first shrimp

• Start with 10-15 Neocaridina of the same colour variant
• Drip acclimate over 60-90 minutes
• Dim lights for 24 hours
• Do not feed for 48 hours — let them graze biofilm and settle

Ongoing routine

• Weekly: 10-15% water change, matched temperature and TDS
• Daily: observe for shrimp activity, count visible shrimp as a colony health check
• Monthly: swap out Indian almond leaves, rinse sponge filter in tank water
• Quarterly: deeper substrate siphon, glass cleaning

Six months in

A well-run Neocaridina tank at six months has:

• 50-100 shrimp (up from your starter 15)
• Visible shrimplets grazing independently
• Established plant growth
• Stable biofilm on every surface

Shrimp colour varieties — choosing your morph

One of the joys of cherry shrimp keeping is the range of colour morphs available, all from the same Neocaridina davidi species. Some key varieties:

Red series

• Sakura cherry — entry-level red, patchy
• Fire red — solid red, most popular
• Painted fire red / bloody mary — deep solid red
• Red rili — red with clear bands (a "rili" pattern)

Blue series

• Blue dream / blue velvet — solid blue
• Blue jelly — pale translucent blue
• Blue rili — blue with clear banding
• Carbon rili — dark near-black blue

Other colours

• Yellow neon — bright yellow-green
• Chocolate — dark brown
• Snowball white — opaque white
• Green jade — unusual olive-green
• Orange pumpkin — solid bright orange

Crucial: all these interbreed freely. If you mix a fire red colony with blue dreams, within 2-3 generations you have muddy wild-type shrimp. One colony per tank = one colour variant.

For deeper colour over generations, cull paler offspring — move them to a separate grow-out tank or rehome. Selective breeding over 5-10 generations dramatically deepens colour.

A note on ghost shrimp and other occasional species

Beyond the Big Three, a few other shrimp appear in the UK market:

• Ghost shrimp / glass shrimp (Palaemonetes paludosus) — cheap, transparent, sometimes predatory on small fish and fry. Short-lived (1 year). Not a long-term colony shrimp
• Bamboo shrimp (Atyopsis moluccensis) — large (8-10cm) filter feeders. Fan-shaped arms. Need strong current and mature planted tanks with suspended food. Interesting but specialist
• Vampire shrimp (Atya gabonensis) — larger filter feeder, deep blue. Even more specialist than bamboo shrimp
• Blue tiger / Taiwan bee — premium Caridina variants, expensive, fussy

For a first shrimp tank: stick to Neocaridina. The other species are interesting projects for keepers with a year or two of shrimp experience.

The yearly cycle of a shrimp colony

A well-run shrimp colony has a predictable rhythm. Knowing what to expect helps you catch problems early and not panic over normal variation.

Month 1-3 (acclimation and establishment)

Starter shrimp settle. You may lose 1-3 in the first two weeks — transport stress catches the weakest. Survivors start grazing visibly, moulting, and colouring up. No visible breeding yet.

Month 4-6 (first breeding)

Gravid females appear (eggs visible under the tail). First shrimplets become visible around month 4-5. They are tiny — 2mm — and hide in moss. Colony remains small and individually identifiable.

Month 7-12 (population growth)

Exponential growth if conditions are right. Multiple generations visible. You stop being able to count individuals. Colony begins to self-stabilise around food availability.

Year 1-2 (mature colony)

Original starter shrimp start dying of old age. New generations replace them. Colony is self-sustaining and often needs culling to prevent overpopulation. The "classic" mature shrimp tank state.

Year 2+ (long-term)

If water chemistry has drifted (especially dropping KH), colonies can suddenly collapse. Mature tanks need occasional refreshes — new starter shrimp from different sources can strengthen genetic diversity.

I have had cherry shrimp colonies run for 5+ years from a starter group of 15. The key is consistency — weekly small water changes, stable parameters, no medications, no copper ever.