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Lake Inle shrimp

Macrobrachium sp. "Inle-See"

The small Myanmar prawn: compact species from Lake Inle — one of the few relatively peaceful Macrobrachium suitable for cohabiting with dwarf shrimp. Eats planaria! Active omnivore and scavenger. Freshwater breeding. Requires many hiding spots especially during molts. Temperature ~26 °C to trigger breeding. Adaptable to water parameters.

Taxonomy
Class:Malacostraca
Order:Decapoda
Family:Palaemonidae
Genus:Macrobrachium
Species:Macrobrachium sp. "Inle-See"

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Water Temperature

22 - 28 °C

pH Value

6.8 - 7.8

Water type

Freshwater

Invertebrate type

Freshwater shrimp

Adult size

5 cm

Minimum group

>= 3

GH

4 - 15 dGH

KH

3 - 10 dKH

TDS

90 - 325 ppm

Ecological role

Scavenger

Copper sensitivity

High

Species description

Geographical Origin and Habitat: Endemic exclusively to the pristine, intensely isolated, high-altitude tectonic waters of Lake Inle in the Shan Hills of Myanmar (Burma). Macrobrachium sp. "Inle-See" (the Inle Lake Pincer Shrimp) natively colonizes the shallow, extraordinarily clear, heavily vegetated, and highly alkaline margins of this ancient lake. These specific micro-habitats are completely characterized by massive, impenetrable floating islands of submerged aquatic vegetation, dense reed beds, and a substrate composed entirely of deep, decaying organic silt and calcium-rich mud.
Taxonomy: Scientifically classified within the Palaemonidae family, it is a spectacular, biologically unique, and incredibly rare "long-arm" shrimp in the aquarium hobby. Morphologically, fully mature adults reach a maximum of roughly 4.0 to 5.0 centimeters (1.5-2.0 inches) in length, making them a "dwarf" within the giant Macrobrachium genus. It possesses a delicate, laterally compressed, highly streamlined body structure. Its absolute defining, evolutionary signature anatomical features are its elongated, astonishingly thin, spider-like front arms (chelipeds) equipped with tiny pincers.
Social Behavior: Unlike their aggressive, giant river-dwelling cousins, the Inle Lake Macrobrachium are highly intelligent, surprisingly peaceful, and deeply timid benthic invertebrates. They possess a strict but non-lethal hierarchical social structure and absolutely MUST be kept in a sizable colony (minimum 6-8 individuals) to establish critical security. In the aquarium, they possess a fascinating, intensely shy, and highly deliberate foraging lifestyle. They will spend 90% of their daylight hours completely hidden inside dense tangles of plants, only emerging cautiously to scavenge.
Coloration and Sexual Dimorphism: Sexual dimorphism is distinct when fully mature; mature males are significantly larger, possess vastly longer, more robust front arms (chelipeds), and possess a narrower abdomen compared to the females. The coloration of the Inle Lake Shrimp is breathtaking, delicate, and designed for extreme aquatic plant camouflage. The entire body is deeply saturated with a highly translucent, glowing, completely transparent glass-like or pale amber base hue. This clear background is spectacularly interrupted by microscopic, intricate dark brown or reddish striping patterns.

Care, breeding and tankmates

Tank Setup: The aquarium architecture MUST flawlessly, unconditionally replicate the pristine, heavily vegetated, high-alkalinity environment of Lake Inle. A minimum 60-liter (15-gallon) tank is required for a dedicated colony. The absolute most critical requirement is overwhelming plant cover: massive tangles of complex branching driftwood, dense thickets of fine-leaved plants (like Hornwort or Guppy Grass), and specifically, massive floating plant beds to aggressively diffuse all bright light. A fine, inert sandy or crushed coral substrate is mandatory to maintain high alkalinity.
Diet and Feeding: Unlike standard dwarf shrimp, Macrobrachium sp. "Inle-See" are highly specialized, active micro-predators and opportunistic scavengers. In the aquarium, their diet MUST be heavily protein-based. They will NOT thrive on standard vegetable shrimp pellets. They strictly MUST be fed a high-quality, heavily meaty diet. Daily offerings of frozen bloodworms, live blackworms, frozen daphnia, brine shrimp, and high-protein sinking carnivorous pellets are unconditionally mandatory for their long-term survival, breeding success, and to prevent aggression.
Water Quality: Originating from the isolated, tectonic Lake Inle, they are incredibly delicate and possess extreme, uncompromising water requirements. They strictly demand a highly stable, moderate tropical temperature (22-26°C / 72-79°F). Crucially, they absolutely require moderately hard to very hard, highly mineralized water (GH 10-20, KH 8-15) and an intensely alkaline, high pH (7.5 - 8.5) specifically achieved using specialized lake salts or crushed coral. They possess absolute zero tolerance for dissolved organic waste; rigorous weekly water changes are unconditionally mandatory.
Compatibility and Tankmates: Compatibility is strictly limited by their highly specific water parameter requirements, delicate spider-like arms, and profound, intense timidity. They are the perfect, spectacular centerpiece for a dedicated, single-species Lake Inle biotope. They MUST NEVER be housed with aggressive, fast-moving, or fin-nipping fish (like Barbs or Cichlids) that will violently dismember their delicate arms. They can be safely housed with perfectly peaceful, small Lake Inle endemic micro-fish (like Sawbwa resplendens or Microrasbora rubescens) that share the same extreme water parameters.
Aquarium Breeding: Breeding is possible but highly challenging, requiring absolute perfection in their extreme alkaline water parameters and massive amounts of dense plant cover. They are direct developers; they do NOT have a larval stage. Triggered by highly stable, hard water and abundant live meaty foods, mature females will carry 20-40 relatively large eggs under their abdomen for roughly 4-5 weeks. When they hatch, the babies emerge as microscopic, fully formed replicas of the adults. The carnivorous babies are profoundly delicate and require massive thickets of moss to avoid predation.
Risks and Diseases: The absolute greatest physical risk is rapid, lethal toxicity; they possess absolute zero tolerance for Copper, heavy metals, or chemical medications. The use of pure RO/DI water remineralized with specific hard-water salts is unconditionally mandatory. The second major risk is lethal physiological collapse caused by incorrect parameters; keeping them in standard soft, acidic shrimp water will rapidly dissolve their exoskeletons and wipe out the entire colony. Finally, they will easily stress to death if housed without massive amounts of dense plant cover to hide in.

Geographic Origin and Distribution

Endemic exclusively to the pristine, intensely isolated, high-altitude tectonic waters of Lake Inle in the Shan Hills of Myanmar (Burma). Macrobrachium sp. "Inle-See" (the Inle Lake Pincer Shrimp) natively colonizes the shallow, extraordinarily clear, heavily vegetated, and highly alkaline margins of this ancient lake. These specific micro-habitats are completely characterized by massive, impenetrable floating islands of submerged aquatic vegetation, dense reed beds, and a substrate composed entirely of deep, decaying organic silt and calcium-rich mud.

Origin

South and Southeast Asia

Invertebrate profile

Diet
Omnivore
The diet of Macrobrachium sp. "Inle-See" must be carefully managed to ensure robust health, vibrant coloration, and long-term survival in captivity. In its natural environment, it has specific foraging habits that should be replicated as closely as possible in the aquarium. Supplementing its diet with high-quality, targeted commercial foods or fresh preparations ensures it receives necessary vitamins and minerals. Care should be taken not to overfeed, as uneaten food will quickly degrade water quality and harm the animal.
Ecological role
Scavenger
Within its native ecosystem, Macrobrachium sp. "Inle-See" plays a vital biological role that contributes to the overall stability of the environment. Whether acting as a scavenger, filter feeder, predator, or prey, it helps to efficiently cycle nutrients through the food web. Its natural behaviors prevent the over-accumulation of organic waste or the unchecked growth of specific prey populations. Introducing this species to a home aquarium often replicates these beneficial ecological functions, promoting a cleaner and more balanced system.
Shock sensitivity
Medium
Aquarists must be aware that Macrobrachium sp. "Inle-See" is exceptionally sensitive to rapid fluctuations in its surrounding water parameters. Sudden shifts in temperature, specific gravity, pH, or dissolved organics can induce severe physiological shock, leading to rapid decline or death. A prolonged and careful drip acclimation process is highly recommended whenever moving this animal between systems. Maintaining pristine and unwavering water conditions is arguably the single most critical factor for its successful husbandry.
Calcium and minerals
Medium
Proper mineral balance is crucial for Macrobrachium sp. "Inle-See", as it requires consistent access to dissolved calcium and related trace elements for physiological maintenance. Depending on its specific biology, calcium is utilized for building external shells, hardening exoskeletons after molting, or supporting skeletal growth. In enclosed aquarium systems, these essential minerals can be rapidly depleted and may require regular supplementation. Routine water testing is encouraged to ensure that general hardness or specific calcium levels remain within the optimal range.
Molting
Yes
For invertebrate species that undergo ecdysis, Macrobrachium sp. "Inle-See" requires a safe and stress-free environment to successfully shed its old exoskeleton. During and immediately following a molt, the animal's new shell is soft, leaving it extremely vulnerable to physical damage and predation. It is important to provide ample hiding spaces where it can retreat until its body fully hardens. If applicable, the discarded exoskeleton should be left in the tank, as the animal will often consume it to reclaim vital minerals.
Reproduction
Oviparous
The reproductive strategies of Macrobrachium sp. "Inle-See" are varied and often highly adapted to its natural environmental conditions. Breeding efforts in a captive aquarium setting can range from straightforward to exceedingly difficult, often depending on specific larval requirements. Successful rearing of young frequently involves managing microscopic planktonic stages and specialized diets away from the main display tank. Nevertheless, captive propagation remains a rewarding endeavor that helps reduce the reliance on wild-caught specimens.
Compatibility & tankmates
Peaceful
Careful consideration of tank mates is required to ensure the safety and wellbeing of Macrobrachium sp. "Inle-See" in a community setup. It should generally be housed with peaceful species that will not relentlessly harass it, nip at its appendages, or view it as a food source. Conversely, its own predatory or territorial instincts must be evaluated to ensure it does not harm smaller or slower-moving tank inhabitants. Observation during the initial introduction period is vital to confirm a harmonious balance within the aquarium.

Image gallery

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Last updated: 06/30/2026
Lake Inle shrimp (Macrobrachium sp. "Inle-See") Care Guide & Tank Setup | Atlarium