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Species profile

Pure Red Line (PRL) Caridina Shrimp

Caridina logemanni

Common names: Pure Red Line (PRL) Caridina Shrimp, PRL Shrimp, Pure Red Line Shrimp, PRL Bee Shrimp

Breeding lineCaridina Shrimp
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Pure Red Line (PRL) Caridina Shrimp (Caridina logemanni)

Adult size

Up to 3 cm

Typical adult length 2–3 cm.

Up to 3 cm

Countries of origin

  • See all stock from Japan

Good fit for your tank?

Good fit for

  • A dedicated breeder who wants Crystal Red-type shrimp from a line kept free of black bee, Taiwan-bee, and tiger genetics.
  • A mature soft-water tank where red depth, white opacity, band shape, and body form can be selected generation by generation.
  • A keeper buying from a trusted breeder who can explain the PRL ancestry instead of relying only on the red-and-white appearance.

Think carefully if

  • You plan to add other red Caridina because they look similar. Red Pinto, Wine Red, Santa, and Taiwan-bee shrimp can compromise a PRL line.
  • You do not want to separate lower-grade offspring or track breeding groups. Maintaining a true line requires more than ordinary colony care.
  • You are paying a high price without proof of lineage. PRL describes breeding history, not simply a high grade or attractive pattern.

A selectively maintained red-and-white Bee Shrimp line bred to preserve red genetics without black offspring.

Appearance and Identification

Opaque white body patterning combined with deep red bands, patches, or head markings; quality standards vary by breeder.

Pure Red Line is a breeding-line designation for red Bee Shrimp associated with Caridina logemanni. The term describes documented line purity, not appearance alone.

Adult females are generally larger and deeper-bodied than males. Colour and pattern intensity are not reliable sex indicators.

Tank Requirements

Suggested filter
About 80–100 litres an hour
Suggested heater
About 25–50 W for this tank
Minimum tank volume
20 litres
Minimum tank length
30 cm
Minimum group size
6
Recommended group size
10
Activity level
Moderate
Flow preference
Low to moderate
Planting preference
Heavily planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Use a mature, cycled aquarium with active substrate or another stable soft-water setup, gentle filtration, abundant biofilm, mosses, leaf litter, and protected filter intakes.

Behaviour and Tankmates

Peaceful dwarf shrimp that graze biofilm, algae, detritus, leaf litter, and prepared foods.

Best maintained in a group with other compatible Caridina lines sharing the same water requirements.

Not normally territorial.

Peaceful community fish may still eat shrimplets. Keep breeding colonies in shrimp-focused aquariums. Different compatible Caridina lines may interbreed and alter colour or pattern outcomes.

Check tankmates for this species

Water Parameters

Temperature
20–23 °C
pH
5.8–6.6
GH
4–6
KH
0–1
TDS
90–140
Stability importance
Very important

Use soft, mildly acidic water, active substrate, and remineralized reverse-osmosis water. Avoid carbonate buildup and large TDS changes.

Parameter caveat
Stability matters more than chasing a single number. Avoid abrupt changes in temperature, pH, GH, KH, or total dissolved solids.

Feeding

Diet types
Aufwuchs Grazer, Detritivore, Omnivore
Feeding frequency
Daily
Preferred foods
  • Mature biofilmPrimary natural grazing resource.
  • Complete dwarf-shrimp foodFeed sparingly and remove uneaten food.
  • Leaf litterProvides grazing area and slowly decomposing natural food.

Omnivorous biofilm grazer. Provide mature natural grazing surfaces and small portions of complete shrimp food, leaf litter, algae-based food, and occasional protein-rich food.

Avoid overfeeding. A mature aquarium with continuous biofilm is more important than heavy supplemental feeding.

Breeding

Breeding type
Direct Developer
Breeding difficulty
Moderate
Breeding temperature
22 °C
Breeding pH
6.2
Brood or egg count
Approximately 15–30 eggs, varying with female size and line
Incubation
28 days
Parental care
Maternal care
Baby foods
  • Mature biofilm and fine powdered shrimp foodShrimplets need constant access to microscopic food on established surfaces.

Direct-developing freshwater shrimp. Females carry eggs beneath the abdomen and release miniature shrimplets. Line purity and pattern consistency depend on selecting breeders and preventing unwanted crosses.

Habitat and Origin

Geographic origin
Captive Bred, Japan
Natural habitat
Freshwater Stream
Aquarium contexts
Breeding Aquarium, Planted Tank, Shrimp Tank
Audience level
Advanced, Intermediate

Classification

Profile type
Breeding line
Genus
Caridina
Family
Atyidae
Species group
Caridina Shrimp

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Red Dragon Caridina Shrimp

Caridina spp.

Care level
Intermediate
Adult size
2–3 cm
Minimum tank
20 litres
Temperature
20–23 °C

Red Galaxy Caridina Shrimp

Caridina spp.

Care level
Intermediate
Adult size
2–3 cm
Minimum tank
20 litres
Temperature
20–23 °C

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