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Blue Jelly Shrimp
Neocaridina davidi 'Blue Jelly'
Also known as Blue Jelly, Blue Jelly Neocaridina davidi
📍 Captive-bred color line of Neocaridina davidi, a species native to Taiwan, China, Korea and Vietnam
Blue Jelly Shrimp are a light, translucent ice-blue to turquoise color line of Neocaridina davidi with an almost glassy look, bred from the Rili line (red Rili → blue Rili → Blue Jelly). They are distinct from the deeper, opaque Blue Velvet, and offspring occasionally show a reddish tinge from their Rili ancestry. Like all Neocaridina, they are peaceful, busy scavengers that graze biofilm and algae all day.
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Care Guide
Diet
Blue Jelly Shrimp are opportunistic omnivores that spend most of their time grazing on biofilm, periphyton, and naturally occurring algae in the tank. Supplement their diet two to three times per week with high-quality shrimp-specific foods such as algae wafers, Repashy gel food, and blanched vegetables like spinach, zucchini, or kale. Avoid overfeeding, as uneaten food degrades water quality rapidly in the small tanks these shrimp typically inhabit.
Behavior
Blue Jelly Shrimp are highly active and peaceful, spending nearly all of their time foraging across substrate, hardscape, and plant surfaces for biofilm and detritus. They are gregarious and feel most secure and display best coloration when kept in groups of six or more, becoming bolder and more visible in well-planted tanks. They will not bother fish or other invertebrates, though they will scatter and hide when threatened, so tank mates must be chosen carefully.
Breeding
Blue Jelly Shrimp breed readily in a well-established, stable tank, making them an excellent choice for beginners interested in shrimp reproduction. Females carry clutches of 20–40 eggs tucked under the tail (saddle visible before fertilization) for approximately 21–28 days until the eggs hatch as fully formed miniature shrimp. Note that because Blue Jelly originates from the Rili line, pairing with other Neocaridina color variants will result in offspring reverting toward wild-type brown coloring, so keep them species-isolated to maintain the blue line.
Tank Mates
See all 5 →Tiny, gentle bottom dwellers that pose no threat to adult shrimp or juveniles
Very small mouth limits predation risk; adult shrimp generally safe, but tiny shrimplets may be taken
Peaceful algae-grazing snails that coexist perfectly with shrimp
Non-predatory, shares similar water parameters, zero conflict with shrimp
Small, peaceful fish; adults are safe but newborn shrimplets may occasionally be picked at
Common Diseases
Bacterial Infection (Muscle Necrosis / White Muscle Disease)
Opaque white patches spreading through the body musculature, lethargy, loss of appetite, death in severe cases
Improve water quality with partial water changes and isolate affected shrimp. Shrimp are very sensitive to medications, so stable, clean water is the main defense.
Vorticella (Peritrich Ciliate Infestation)
White, fuzzy, or cotton-like growths on the body, head, or limbs; affected shrimp may appear lethargic
Improve water quality and flow, and isolate affected shrimp. A brief dip in salted water can help, used with care because shrimp are sensitive to salt.
Ellobiopsidae (Green Fungus / Cladogonium ogishimae)
Bright green to yellow parasitic growths, usually visible under the abdomen or near the gills; affected shrimp become infertile
No reliable cure; remove and euthanize affected shrimp immediately to prevent spread; maintain excellent water quality and quarantine all new livestock
Failed Molt (Mineral Deficiency / Molting Disorder)
Shrimp found stuck in old exoskeleton, partial molt, shrimp dying during molt, white ring of death around mid-body
Ensure adequate GH (6–12 dGH) and trace minerals; supplement with commercial mineral products or crushed coral; avoid sudden parameter swings which trigger emergency molting
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Quick Facts
- diet
- Omnivore — biofilm, algae wafers, blanched vegetables, shrimp pellets
- lifespan
- 1-2 years
- max size
- 3 cm (1.2 in)
- tank size
- 5 gallons minimum
Water it likes
- ph
- 6.5-8.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 6-12 dGH
- temperature
- 64–79°F (18–26°C)
Legality
No state or federal restrictions on record for this species.
Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.