Ghost Shrimp (Glass/Grass Shrimp) Care Guide

Ghost shrimp are cheap, genuinely hardy and transparent enough to watch their gut work — but the honest headline is that you are usually buying a stressed feeder animal with poor odds, and unlike cherry shrimp it is a mild opportunistic predator, not a peaceful grazer.

Ghost Shrimp (Glass/Grass Shrimp) at a glance

The sourced figures the welfare engine uses to judge Ghost Shrimp (Glass/Grass Shrimp) — the parseable key facts.

Where it comes from

The nominal species is Palaemonetes paludosus (now often rendered Palaemon paludosus), a palaemonid from the southeastern United States — the Atlantic coastal plain from southern New Jersey to Florida, plus the Gulf states, in low-gradient freshwater ponds, lakes and slow streams thick with submerged vegetation. It tolerates slightly brackish water (0-10 ppt) and a wild temperature swing of roughly 10-35 C, which is why it is so forgiving on parameters in the tank. Ecologically it evolved as prey — a keystone detritus-recycler heavily eaten by bass, sunfish and wading birds — which is literally why it became the hobby's default feeder. That origin explains its care: a wide tolerance makes it hardy; a vegetated, detritus-rich habitat means it wants a planted, mature tank to forage in and hide while moulting; and it is a nocturnal omnivore with a real animal-matter component, not a pure biofilm grazer like Neocaridina.

Did you know?

• The fish-food shrimp with a hidden mean streak: marketed as a cheap peaceful scavenger, it is actually a mild opportunistic predator that eats fry, baby shrimp and the weak.
• "Ghost shrimp" is a name, not a species — it covers several Palaemonetes species and even unrelated aggressive Macrobrachium, so you genuinely may not know what you bought.
• It breeds in freshwater but still has sea-style larvae: P. paludosus needs no salt to breed (unlike Amano), yet its eggs hatch into free-swimming planktonic larvae that need microscopic food — a true biological in-betweener.
• You can watch it eat: the transparent "glass" body lets you see the gut, food and the female's green egg saddle right through the animal.
• A wild keystone species and bird and bass food in Florida wetlands — which is literally why it ended up as the hobby's default feeder.
• The whisker-shrimp imposter: the aggressive Macrobrachium lanchesteri hides in feeder tanks; spot it by its oversized claws and long whiskers before it hunts your tank.

Tank size — and why

Sources split between a 5 and a 10 gallon minimum; 10 gallons is the safer recommendation. Aquariadise gives 5 gallons as the floor, while aquariumbreeder calls anything under 5 gallons unsuitable and recommends 10. The constraint is not swimming room — bioload is low for a small scavenger — but parameter stability and foraging space: small volumes swing faster and starve a scavenger. A rough stocking guide is 2-3 shrimp per gallon for a colony. Add them only to a cycled, mature tank with established biofilm, algae and detritus to forage; a sterile new tank starves them and exposes them to ammonia.

As a guide, a 20-gallon tank comfortably suits about 8–11 Ghost Shrimp (Glass/Grass Shrimp) as a single-species display, leaving room for tankmates.

Water parameters in practice

This is where ghost shrimp earn their hardy reputation — they are forgiving on pH and temperature. Aim for 22-27 C and pH 7.0-7.4, with a tolerated band of roughly 18-28 C and pH 6.5-8.0. Stability still beats chasing an exact number: a big cold or soft water change, or rough acclimation of already-stressed feeders, is a leading early-death trigger, so drip-acclimate. Hardness still matters for moulting — like all shrimp they need dissolved minerals (calcium and carbonate) to harden the new shell, and very soft water risks failed moults; target around GH 5-8 dGH, KH 5-8 dKH and TDS 150-200 ppm, and supplement calcium if your water is very soft. Keep ammonia and nitrite at zero. Copper is an absolute: trace amounts are lethal.

Will it thrive in your water?

The comfortable range for Ghost Shrimp (Glass/Grass Shrimp) is about 18–28 °C (64–82 °F) and pH 6.5–8. Test your own tap water against it below.

These are the sourced comfortable ranges. Stable water matters more than chasing an exact number — a steady reading inside the band beats a "perfect" one that drifts. Some fish also need a particular water hardness (GH); where that applies, the prose above covers it.

Diet & feeding

An undemanding omnivore — but with a real animal-matter component that sets it apart from cherry shrimp. In the wild its diet is dominated by algae (diatoms and green algae, around 47% of food ingested in one study) but also takes living vascular plants, aquatic insects and detritus, meaning over half is something other than algae. In the tank it eats almost anything: biofilm, detritus, algae wafers, sinking pellets, blanched vegetables and protein from frozen or live foods, and a mature tank feeds it partly passively. It is generally safe with plants but may nibble soft young growth if starving, so keep it fed. A welfare-relevant quirk: it can be hyper-aggressive and territorial at feeding time in crowded tanks, which drives the conspecific squabbles below — spread food out and don't underfeed. Feed small amounts; overfeeding fouls the water and is a top avoidable killer in a small shrimp tank.

Gear & setup

Set up a planted, mature tank with dense live plants, moss, driftwood and hides — these are foraging surface, moult refuge for a soft, defenceless freshly-moulted shrimp, and escape cover for weaker individuals from larger, hungrier tankmates of their own kind. Keep a lid (shrimp can climb during parameter stress) and a shrimp-safe intake; a sponge filter is the hobby standard because it cannot suck in shrimp or larvae and grows grazeable biofilm. Any inert substrate works, with gentle-to-moderate flow to suit their slow-water origin. They are primarily bottom foragers but work all surfaces.

Temperament & behaviour

Semi-peaceful, not fully peaceful, and capable of intraspecific aggression. Ghost shrimp don't school and have no social group requirement — a single shrimp survives fine — but the practical norm is to buy a handful so they forage confidently and a colony can establish. They are usually non-aggressive but can become territorial and aggressive in crowded tanks and at feeding time, and larger individuals will take weak or freshly-moulted (soft-shelled) tankmates and baby shrimp. Cover and adequate feeding are what keep this in check. This is why calling them simply "peaceful" understates them — they sit in an unusual middle as both prey and a low-grade predator.

Group & social needs

No fixed group minimum and no shoaling obligation, but keep several rather than one — a small group forages more confidently and lets a colony establish. Give them space, cover and enough food to prevent the territoriality and cannibalism of moulting or weak individuals that crop up in crowded, underfed tanks. Females are larger and deeper-bodied than the slimmer males.

Compatible tank mates (preview)

A short, engine-cleared shortlist — the species TankStocking's welfare engine clears with Ghost Shrimp (Glass/Grass Shrimp) and that suit its size and temperament best. Tap a name for its care guide, or use + to load the pairing in the planner.

• Amano Shrimp+Peaceful temperament, similar adult size
• Assassin Snail+Peaceful temperament, similar adult size
• Black Neon Tetra+Uses the midwater zone, peaceful temperament, similar adult size
• Black Phantom Tetra+Uses the midwater zone, peaceful temperament, similar adult size
• Bronze Corydoras+Peaceful temperament, similar adult size
• Cardinal Tetra+Uses the midwater zone, peaceful temperament, similar adult size
• Celestial Pearl Danio+Uses the midwater zone, peaceful temperament, similar adult size
• Checker Barb+Uses the midwater zone, peaceful temperament, similar adult size

This engine-cleared shortlist is Ghost Shrimp (Glass/Grass Shrimp)'s tankmate surface for now — a dedicated tank-mates guide can follow for high-demand species.

Breeding & sexing

A genuine biological in-betweener. Palaemonetes paludosus breeds in pure freshwater — it does not require brackish water, and development proceeds similarly at 0 and 5 ppt while failing at 10-20 ppt — yet, unlike cherry shrimp, it still has a free-swimming larval stage. Sexing is straightforward: females are larger and carry a visible greenish or olive "saddle" of eggs on the back, seen through the transparent body, then a clutch under the abdomen; males are smaller and slimmer. Fecundity runs 8-85 eggs (averaging about 36), hatching after roughly 12-14 days at 26-28 C. The catch is the larvae: they are tiny, planktonic and need microscopic food (infusoria, green water, then baby brine), with metamorphosis around 5-10 days post-hatch and maturity in 2-3 months. In a normal display tank the larvae are usually eaten or starve, so deliberate breeding is moderate-to-advanced, not the self-multiplying colony cherry shrimp give. One caveat: this freshwater-larvae fact is specific to P. paludosus, while other Palaemonetes sold as ghost shrimp may be estuarine and need brackish water to breed.

Lifespan

About 1 year, often less — the wild animal is on an annual cycle, maturing at around a year and dying after spawning. Hobby reports stretch to 1-3 years, with one cited specimen reaching about 7, but treat 3-plus years as exceptional. The dominant factor is stock quality, not biology: sold as fish food, they are kept overstocked and under-filtered, arrive starved, stressed and possibly diseased, and are usually sold quite mature — so much of the natural clock has already elapsed. Massive losses for weeks are common, and some keepers see roughly 50% mortality within months or even a week. On top of that, copper exposure, ammonia or nitrite from an uncycled tank, failed moults and acclimation shock all shorten it.

Common mistakes

• Expecting a hardy pet and getting a stressed feeder. Expect early losses, quarantine and observe before adding to a prized tank, buy the most active individuals, and drip-acclimate. For a reliable long-lived cleanup shrimp, cherry or Amano are better buys.
• Putting them with fry or delicate dwarf shrimp. They eat fry and weak or baby shrimp and can harass dwarf shrimp — don't use them in a fry or breeding tank, or as a peaceful cherry-shrimp tankmate.
• Not checking what you actually bought. The aggressive whisker shrimp (Macrobrachium lanchesteri) is routinely mixed into feeder batches; inspect for its tells (oversized claws, long antennae, opaque body) — it will hunt and kill small fish, shrimp and snails.
• Any copper — in fish meds, algaecides, some fertilisers or old plumbing. Trace amounts kill an entire colony; read every label.
• Adding to a new, uncycled or sterile tank, where ammonia spikes and there is nothing to forage.
• Housing with fish big enough to eat them — cichlids, large barbs, goldfish, loaches and puffers will.
• Overcrowding plus underfeeding, which triggers territorial aggression and cannibalism of moulting or weak shrimp; give cover, space and adequate food.
• Expecting easy freshwater breeding like cherry shrimp — they breed in freshwater, but the larval stage makes raising the young hard.

Signs of trouble

• A whitish or pinkish, cooked-looking opacity — signals illness, stress or imminent death, distinct from the temporary pre-moult opacity.
• Repeated failed or "stuck" moults — usually too-soft water, poor nutrition or parameter shock; usually fatal.
• Lethargy and not foraging — often feeder-stock stress or poor water in the days after introduction.
• Rapid losses shortly after adding stock or a water change — the signature of acclimation or parameter shock in already-stressed feeders.

Is this fish right for you?

Don't buy ghost shrimp expecting a reliable, long-lived, peaceful colony shrimp — that's cherry or Amano. Buy them only if you accept they are cheap feeder stock with high early mortality, you'll quarantine and drip-acclimate, and you won't house them with fish big enough to eat them or with fry and delicate dwarf shrimp they would prey on. Always inspect for whisker-shrimp tells (big claws, long antennae, opaque body) before trusting any "ghost shrimp" near small tankmates, since you genuinely may not know which species is in the bag. If you'll ever need to medicate the tank, remember most fish meds contain copper, which is lethal. There are no dyed or deformed morphs to avoid, but supply-chain welfare is poor — buy from a shop with healthy, active stock.

Bringing one home

Because feeders arrive stressed, rough acclimation is a top early killer — it is not uncommon for them to die within a day or two of introduction. Drip-acclimate slowly to let them adjust to hardness and TDS gradually, and add them only to a mature, cycled, stable tank with biofilm to forage. Quarantine and observe before adding them to a prized tank, and never use copper-based treatments.

Common questions

Why do my ghost shrimp keep dying so fast?

Usually stock quality, not your tank. Sold as feeders, they arrive starved, overcrowded and stressed, and are often already mature, so massive losses for weeks are common. Buy the most active individuals, drip-acclimate, add them to a mature cycled tank, and expect a short ~1-year natural lifespan on top of that.

Are ghost shrimp safe with cherry shrimp or fish fry?

Risky. Ghost shrimp are more predatory than cherry shrimp — they eat fish fry, baby shrimp, and weak or freshly-moulted shrimp, and get territorial at feeding. Don't use them in a fry or dwarf-shrimp breeding tank.

How do I tell a ghost shrimp from a whisker shrimp?

Whisker shrimp (Macrobrachium lanchesteri) are mixed into feeder batches and are aggressive predators. The tells: oversized, well-developed claws, much longer antennae, and a more opaque body. True ghost shrimp have small, unobtrusive claws and a transparent, faintly peppered body.

Do ghost shrimp need hard or soft water?

Moderate. They are far less fussy than cherry shrimp and tolerate a wide range, but they still need dissolved minerals to harden the shell after each moult, so very soft water risks failed moults. Aim for GH around 5-8 dGH and supplement calcium if your water is very soft.

Can ghost shrimp breed in freshwater?

Yes — P. paludosus breeds in pure freshwater and needs no salt, unlike Amano shrimp. But unlike cherry shrimp it has a free-swimming larval stage that needs microscopic food, so the young are hard to raise and usually eaten or starved in a normal display tank.

Sources & confidence

Sources & confidence (9 species)

These back the Ghost Shrimp (Glass/Grass Shrimp) figures and the previewed tank mates above. Each figure is read from the TankStocking species database (v2026.06); below is the care reference behind it and how confident we are in that data. Confidence reflects the source quality, not whether any pairing is safe. Full source list and the welfare model are on the methodology page.

• Ghost Shrimp (Glass/Grass Shrimp) Palaemonetes paludosus — The Shrimp Farm (theshrimpfarm.com/posts/shrimp-caresheet-ghost-shrimp-palaemonetes-sp) medium confidence
• Amano Shrimp Caridina multidentata — Aquarium Co-Op amano shrimp care; Aquadiction high confidence
• Assassin Snail Anentome helena (Clea helena) — The Shrimp Farm (theshrimpfarm.com/posts/assassin-snail-care) high confidence
• Black Neon Tetra Hyphessobrycon herbertaxelrodi — Seriously Fish / Aqua-Fish (Hyphessobrycon herbertaxelrodi) high confidence
• Black Phantom Tetra Hyphessobrycon megalopterus — Seriously Fish (Hyphessobrycon megalopterus) high confidence
• Bronze Corydoras Corydoras aeneus — Seriously Fish (seriouslyfish.com/species/corydoras-aeneus) high confidence
• Cardinal Tetra Paracheirodon axelrodi — Seriously Fish (seriouslyfish.com/species/paracheirodon-axelrodi) high confidence
• Celestial Pearl Danio Celestichthys margaritatus — Seriously Fish (seriouslyfish.com/species/celestichthys-margaritatus) high confidence
• Checker Barb Oliotius oligolepis — Seriously Fish — Oliotius oligolepis (https://www.seriouslyfish.com/species/oliotius-oligolepis/) high confidence

Care-guide sources (8)

This guide synthesises the references below; where they disagree, the range and the disagreement are noted in the text above. The figures in the key-facts box are read from the TankStocking species database (v2026.06). Full welfare model on the methodology page.

• Wikipedia — Palaemon paludosus
• Animal Diversity Web — Palaemonetes paludosus (riverine grass shrimp)
• USGS NAS — Eastern grass shrimp (Palaemonetes paludosus) factsheet
• Shrimp & Snail Breeder (aquariumbreeder) — Ghost Shrimp: Detailed Guide
• Aquariadise — Ghost shrimp (Palaemonetes) care & info
• EWASH — What type of shrimp are ghost shrimp?
• ShrimpKeepers — Whisker Shrimp Warning
• The Shrimp Farm — Ghost Shrimp (Palaemonetes) caresheet

More on Ghost Shrimp (Glass/Grass Shrimp)

Related guides on TankStocking — each scored by the same welfare engine as the planner.

This care guide is a sourced planning reference, not veterinary advice — individual fish, filtration and maintenance all matter. Cycle the tank, test your water, and observe your fish. How TankStocking works →