No Entry Shrimp

Caridina logemanni

Also known as No Entry Caridina

Animalia›Arthropoda›Malacostraca›Decapoda›Atyidae

The No Entry Shrimp is a striking freshwater shrimp characterized by bold red and white banding or a distinctive 'no entry' pattern on its body and legs. This selectively bred variety displays vibrant contrasting coloration that makes it highly sought after by aquarists. The pattern typically features red bands interrupted by clean white segments, creating a visually dramatic appearance.

Where it's from

Recorded as introduced in Norway

At a glance

Size: 1.5 in; 4 cm
Min tank: 5 gal; 19 L
Group: 10+
Temp: 72–79°F; 22–26°C
pH: 5.5-6.5
GH: 71–107 ppm; 4–6 dGH
Temperament: Peaceful
Swims: Bottom
Lifespan: 1-2 yrs

Ammonia 0 ppm and nitrate under 20 ppm.

Care

Diet

No Entry Shrimp are detritivores that graze on biofilm, algae, and decaying plant matter. Supplement with high-quality shrimp pellets (Shirakura, Mosura) and blanched vegetables like spinach or zucchini 2-3 times weekly. Ensure adequate calcium and minerals through specialized shrimp supplements or mineral-rich substrates.

Behavior

These shrimp are active grazers, constantly foraging along the substrate and plants for food. They exhibit typical molting behavior every 4-6 weeks and should have plenty of hiding spots during vulnerable post-molt periods. Colony dynamics are peaceful; they gather in groups but do not exhibit aggressive territorial behavior.

Breeding

No Entry Shrimp require soft, acidic water (pH 5.5-6.5, GH 4-6) to successfully breed and produce viable offspring. Females carry berries (eggs) for 20-24 days before releasing fully-formed miniature shrimp. High-quality water conditions and stable parameters are essential for consistent breeding success.

Tank mates

See all 5

Otocinclus

Small, peaceful algae eater that shares similar water parameters and does not prey on shrimp

excellent

Ember Tetra

Tiny, non-aggressive fish that thrive in soft acidic water; minimal predation risk

good

Chili Rasbora

Very small peaceful fish compatible with shrimp-focused tanks

good

Amano Shrimp

Larger shrimp species that coexist peacefully without competing for resources

excellent

Java Moss

Provides essential grazing surfaces, shelter, and biofilm production

excellent

No state or federal restrictions on record.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and change over time; check with your state wildlife or agriculture agency before buying, keeping or shipping it.

The care information here is written with AI help, so it can contain mistakes. Spot one? Tell us and we'll fix it. Native range: Global Register of Invasive and Introduced Species (CC BY 4.0).