Freshwater Fish · Shrimp

Bamboo Shrimp

Atyopsis moluccensis

Fan-handed filter feeder that fishes the currentIntermediate

Lifespan: 1-2 years is typical; up to 5 when well fed, but many starve sooner
Size: 2.5-3.5 in; males larger, with a thickened, elongated front pair of legs
Social needs: Fine alone; peaceful in groups of 3+
Time: Normal tank care plus targeted feeding several times a week
Cost: Low-medium
Diet: Filter feeder: fine particle foods dosed into the current

Overview

What is this animal?

The bamboo shrimp is the freshwater hobby's specialist filter feeder: instead of claws, its front limbs end in four feathery fans that it spreads into the current to net passing food particles.
At up to 3.5 inches it dwarfs the cherry and Amano shrimp elsewhere on this site, wearing warm amber-brown with a pale cream racing stripe down its back.

That fan-feeding lifestyle is the entire care puzzle.

Show 3 more

It cannot graze algae the way other shrimp do, so it thrives only in a mature tank with genuine water movement and enough suspended food, which is why an animal routinely sold as easy earns an Intermediate rating here.

Almost every bamboo shrimp in the trade is wild-caught in Southeast Asia, because its larvae need brackish water to develop and it has never been bred at scale in home tanks.
That makes careful sourcing and gentle acclimation part of keeping this species responsibly.

Temperament

The bamboo shrimp is entirely peaceful and physically incapable of harming a tankmate, because its fans cannot pinch anything.
It is safe with plants, snails, dwarf shrimp, and any small, gentle community fish.

Show 4 more

It is content kept alone, and a group of three or more will simply line up along the same flow line without any squabbling.
The danger runs the other way: large cichlids, goldfish, crayfish, and nippy barbs treat a slow, defenceless shrimp of this size as a target.

Expect a mostly sedentary animal that claims one high-flow perch and occupies it for weeks, becoming more active toward dusk.
The reward is not antics but the quiet spectacle of a living net fishing the current every day.

A good fit for

Mature, well-established planted community tanks
Keepers fascinated by unusual feeding behaviour
Peaceful communities of small, gentle fish
Aquarists willing to target-feed powdered foods
Tanks with steady flow from a filter or powerhead

Common mistakes to avoid

Spotless, over-filtered tanks: filter feeders starve in them
Fan-sweeping the substrate, the classic starvation sign
Soft, mineral-poor water causing stuck or failed moults
Copper in any medication or fertiliser: lethal
Rushed acclimation of already-stressed wild-caught stock
Housing with large fish, crayfish, or nippy barbs

Enclosure

Minimum 20 gallons

Fine alone or with company. Fine alone; peaceful in groups of 3+

Plan on a 20-gallon long tank as a working minimum, and only a tank that has been running for several months; a freshly cycled aquarium is too clean to feed a filter feeder.
Place wood or rock perches directly in the outflow of the filter or a small powerhead, because the shrimp will climb to the fastest water it can find and face into the stream.

Keep the water at 72-82°F, pH 6.5-7.5, with moderate to firm hardness and ammonia and nitrite at zero.

Show 5 more

It needs enough dissolved minerals (GH and KH) to build each new shell, so do not run it in soft, near-RO water.
Like all invertebrates it has no tolerance for copper in medications or fertilisers.
Fit a tight lid, since a hungry or stressed bamboo shrimp is a determined climber.

Provide dense plants or caves for moulting, because it hides for several days after each moult while its new shell hardens.
If there is no strong flow anywhere in the tank, this is the wrong species for that tank.

Check your enclosure

Supplies

Setup

Tank and stand
Filter
Heater and thermometer
Substrate, plants and decor
Liquid test kit
Dechlorinator and starter supplies

Ongoing

Powdered spirulina or fine particle food
A fine larval or reef micro-diet
Baby brine shrimp, frozen or hatched at home
Pipette or turkey baster for target-feeding into the current
Mineral or GH supplement for shell health
Small powerhead, if the filter outflow gives no strong current

Safe substrate: Fine, smooth sand · Smooth, rounded fine gravel (not for loaches or sand-sifting cichlids; sand is better for corydoras) · Bare bottom (quarantine and grow-out only)

Work out the cost

Care routine

Daily

Check temperature and equipment
Head-count and look everyone over

Every few days

Feed small amounts (target-feed bamboo shrimp into the current)every 2 days
Top up evaporationevery 3 days

Weekly

Small, matched water change
Test hardness as well as nitrogen
Wipe the front glass only

Show 5 more

Every few weeks

Trim and thin the plantsevery 2 weeks

Monthly

Check labels for copper
Check supplies and reagent dates
Replace or recharge chemical media, if you use any (skip it in a blackwater tank)
Rinse the filter media

Health review: Quarterly colony and mineral review, every 3 months

Tools

Is your enclosure big enough?Check your measurements against the recommended size What will it cost?Setup, monthly and over its whole life, itemised Is this ammonia reading dangerous?Works out the toxic part from your pH and temperature

Care in depth

Diet

Filter feeder: fine particle foods dosed into the current

A bamboo shrimp eats by holding its fans open in the current and combing off whatever they trap, so its food must be suspended in the water column, not sitting on the glass.
In most home aquariums the natural supply of micro-particles is not enough, so target-feed several times a week: powdered spirulina, finely crushed flake, a fine larval micro-diet, or baby brine shrimp released upstream so the cloud drifts through the fans.

Read the behaviour like a gauge.
A shrimp perched high with fans spread is feeding well, while one crouched low and sweeping the substrate with its fans is starving, and slow starvation is the single most common way keepers lose this species.

A spotless, heavily over-filtered tank works against it, so aim for a mature system with some biofilm and mulm rather than surgical cleanliness.
Never move it to a bare quarantine-style tank long term, because there is nothing there for it to eat.

Health

Signs of good health, and the common problems

Most losses happen in the first few weeks, because wild-caught stock arrives stressed and half-starved from the supply chain.
Drip acclimate over at least an hour, and in the shop choose an animal that is actively fanning rather than one crouched low and picking listlessly at the gravel.

It moults every month or two and then disappears into cover for days, which is normal, not illness.
Leave the shed shell in the tank, since the shrimp eats it to recover minerals, and trace failed or stuck moults to unstable parameters or mineral-poor water.

Colour shifts from deep brick red to muddy brown are normal and track mood, moulting, and background, so do not read them as disease on their own.
Check every medication and plant fertiliser for copper before it goes anywhere near the tank, and with steady feeding expect 1-2 years at least, and up to 5 from a well-kept adult.

Is this urgent?

7 warning signs and how fast to act, 4 of them right away

In a shrimp tank the patient is usually the water. Test before you treat: many fish medications harm shrimp, and dosing a healthy tank for a disease it does not have makes things worse.

Go now

Any detectable ammonia or nitrite in a stocked tankChange 25-30% now with dechlorinated water matched for temperature and hardness (GH, KH and TDS), and repeat in steps through the day rather than making one large change. Stop feeding. Test again in 12 hours. Both are directly toxic. How toxic the ammonia reading is depends on pH and temperature, so the same number can be harmless or lethal. One large change with unmatched water can trigger failed moults.

Now

Several shrimp crowding at the waterline, or trying to climb outIncrease surface movement now, then test the water and think back over anything new that went in. Either the oxygen has crashed or something in the water is irritating them. Both are hours-scale problems. A bamboo shrimp perched in the filter current is feeding, not escaping.

Now

Shrimp darting or swimming frantically, especially after a water change or a new additionStop, test the water, and check whatever went in for copper or pesticide residue. If something did, take it out and change water in matched steps. Frantic swimming is how shrimp react to a sudden change in the water or to something toxic in it, and a new plant, decoration or treatment is a common source.

Now

Sudden deaths, more than one animal in a dayTest ammonia, nitrite, nitrate, GH, KH and temperature before doing anything else, and think back over anything new that went in. Do not add medication. Multiple simultaneous deaths usually point at the water, the equipment or something added to the tank rather than a pathogen, so rule those out first.

Now

Today

A shrimp stuck partway out of its old shell, or repeated failed moultsTest GH, KH and TDS and compare them with your last readings, then bring any drift back slowly, over days rather than hours. Failed moults come from swinging hardness far more often than from dirty water, and a shrimp that cannot finish a moult usually dies.

Today

White spots, white fuzz or white threads on the animalShrimp do not get white spot (ich), so identify what you are seeing before you treat anything. If fish in the same tank have white spot, treat the fish in a separate hospital tank: copper kills invertebrates at ordinary doses, and malachite-green and formalin remedies can harm them too. White spot cannot keep going in a tank with no fish, because the parasite cannot survive without a fish host. The look-alikes on shrimp (Vorticella, Scutariella, fungus, and the milky white muscle of a sick shrimp) each need different handling.

Today

Soon

Hiding or not grazing for more than two days (bamboo shrimp: fans folded, or sweeping the substrate)Test the water, including GH and KH, and review recent changes. A bamboo shrimp sweeping the substrate with its fans is hungry, so target-feed it into the current. Usually the earliest visible sign of a parameter drifting. A shrimp hiding for a day or two around a moult is normal.

A few days

Never add new animals to a tank that is not fully cycled, and never treat blind. Read every medication, algaecide and plant treatment for copper before it goes in. A test kit is cheaper than the colony.

This is general guidance for a healthy adult, not a diagnosis. An exotics vet who knows your animal always overrides it, and the time to find one is before you need one.

Bedding and substrate

3 safe, 4 with a caveat, 2 to avoid

Substrate in an aquarium is a filter as much as a floor. Most of the biology lives in and on it.

Safe

Fine, smooth sandCorrect for corydoras, kuhli loaches, eartheaters such as rams and acaras, and anything else that sifts or burrows. Barbels wear away on sharp gravel.

safe

Smooth, rounded fine gravel (not for loaches or sand-sifting cichlids; sand is better for corydoras)Rinse thoroughly before use. Grain size should be too large to swallow and too small to trap food. Kuhli loaches need sand to burrow into and rams and acaras sift mouthfuls of it; bronze and panda corydoras manage on smooth fine gravel, but sterbai corydoras need sand.

safe

Bare bottom (quarantine and grow-out only)Legitimate for quarantine and grow-out tanks. Easy to clean, but it holds far less biological filtration, and it is no long-term home for burrowing loaches or sand-sifters.

safe

With a caveat

Crushed coral or aragoniteDeliberately raises hardness and pH. Correct for rift-lake cichlids, wrong for soft-water species.

with a caveat

Aquasoil for planted tanksExcellent for plants, but most active soils soften the water and pull pH and KH down for months, and many leach ammonia for the first weeks. Right for soft-water species; wrong for hard-water animals (livebearers, rainbowfish, goldfish, and snails, whose shells erode in soft, acidic water) unless you test GH and KH and remineralise. Cycle around it; do not stock into it.

with a caveat

Very deep sand bedsAnaerobic pockets form below about 2 inches in still sand. Either keep it shallow or keep it stirred.

with a caveat

Painted or coated gravelUsually fine, but coatings chip. Test a handful in a jar for a week first.

with a caveat

Never

Sharp or angular gravel with bottom-dwellersWears down barbels and leads to infection in corydoras and loaches.

never

Anything containing metal, limestone of unknown origin, or shells in a soft-water tankSlowly alters chemistry in ways that are hard to diagnose later.

never

This is our general list for freshwater fish. We have not built one specific to Shrimp yet.

Top resources for more info

Independent creators and organisations we would send a friend to. We have no affiliation with any of them, and nothing here is sponsored. Links checked 2026-10-22.