Red Bloody Mary Shrimp – Complete Guide

Overview

Red Bloody Mary (RBM) shrimp are a selectively bred Neocaridina variety known for their deep, translucent cherry-red coloration. They are one of the most vibrant and premium red Neocaridina shrimp available. Their color is stored primarily in the tissue, not the shell, giving them a bright glossy appearance.

Appearance

• Color: Intense, deep red with a glossy, jelly-like translucency.

• Body Type: Sleek and slim Neocaridina shape.

• Size:

  • Females: 2–3 cm

  • Males: 1.5–2 cm

• Gender Differences:

  • Females: Larger, deeper color, saddle visible when mature.

  • Males: Smaller, lighter red.

Tank Requirements

• Tank Size: Minimum 10 liters; ideal 20–30 liters for stable colonies.

• Temperature: 20–26°C (best at 22–24°C).

• pH: 6.5–7.4.

• GH: 4–8.

• KH: 2–4.

• TDS: 150–200.

• Filtration: Sponge filter preferred.

• Substrate: Inert or shrimp soil.

• Lighting: Low–medium.

Behavior

• Peaceful, active, constantly grazing.

• Live in groups; feel secure with plants and mosses.

• Great for planted nano tanks.

Diet

They are omnivores and graze constantly. Offer:

• Biofilm (their primary natural food)

• Algae

• Shrimp-specific food

• Blanched vegetables (spinach, zucchini, pumpkin)

• Indian almond leaves

• Spirulina-based foods

Avoid: Overfeeding protein → causes molting problems and shrimp deaths.

Breeding

Red Bloody Mary shrimp are very easy to breed if parameters are stable.

Mating

• Females release pheromones after molting.

• Males become active and search for the female.

Eggs

• Females carry eggs under the abdomen (“berried”).

• Egg color: Dark red to yellowish.

• Gestation: 3–4 weeks.

• Babies are tiny, fully formed shrimp.

Baby Survival Tips

• Provide moss (Java moss, Subwassertang).

• Avoid strong filtration.

• Keep water clean and stable.

• No fish that eat shrimplets.

Care & Maintenance

Water Quality

• Best in low waste, planted systems.

• Weekly 20–30% water changes.

• No sudden temperature or pH changes.

Important Avoidances

• Copper (toxic to shrimp)

• Medications without checking ingredients

• Rapid parameter swings

Molting Issues

Caused by low minerals or sudden changes.
Fix with stable GH and consistent water changes.

Tank Mates

Safe tank mates:

• Snails (nerite, ramshorn)

• Small peaceful fish (ember tetra, celestial danio, chili rasbora)

• Otocinclus

• Other Neocaridina (only if you don’t mind mixing colors)

Avoid:

• Betta fish

• Barbs

• Gouramis

• Any predator fish

• Large fish that hunt shrimplets

Benefits in the Aquarium

• Beautiful bright red color

• Active cleaners

• Eat algae, detritus, biofilm

• Great for planted and nano tanks

• Very hardy compared to Caridina species

Common Problems

1. Shrimp Dying After Molt

Cause: Low minerals, sudden water changes.
Fix: Keep GH stable, use remineralized water if needed.

2. Shrimplets Not Surviving

Cause: Predatory fish, lack of moss, poor water quality.
Fix: More hiding areas, stable parameters.

3. Color Fading

Cause: Stress, poor genetics, low-quality diet.
Fix: High-quality shrimp food, stable water, minimize stress.

Key Highlights

• One of the brightest Neocaridina reds

• Deep jelly-like coloration

• Very easy to care for and breed

• Perfect for beginners

• Hardy and adaptable

• Best kept in stable, planted tanks