Cubaris "R13 Rubber Ducky" Isopods

Cubaris “R13 Rubber Ducky” Isopods

Cubaris “R13 Rubber Ducky” is a highly sought-after line of the famous Rubber Ducky isopod. Known for the unmistakable “duck-like” facial pattern and rounded armoured body, this Cubaris species has become one of the most iconic and collectible isopods in the hobby.

The R13 line is prized among collectors and breeders for its consistent colouring and distinctive appearance. Like other Rubber Ducky variants, these isopods thrive in stable tropical conditions with deep substrate, steady humidity, and plenty of natural hiding places.

Quick facts

• Care level: Intermediate–Advanced
• Temperament: Shy but fascinating to observe
• Best feature: Iconic “rubber ducky” face pattern
• Good for bioactive: Yes (excellent detritivores)

Habitat & setup

• Ventilation: Moderate (avoid overly dry airflow)
• Humidity: High with a clear moisture gradient
• Substrate: Deep organic mix with rotting wood and leaf litter
• Leaf litter: Always available (primary food source)
• Hides: Cork bark slabs, curved bark pieces, and rotten hardwood

Temperature

• Ideal range: 22–26°C
• Notes: Stable warmth supports breeding and colony health

Feeding

Rubber Duckies feed primarily on leaf litter and decaying hardwood. Supplement occasionally with protein foods such as fish flakes or shrimp pellets and offer vegetables like carrot or courgette in moderation.

• Staples: Leaf litter, rotten wood
• Supplements: Occasional protein foods
• Calcium: Cuttlebone, limestone, or calcium powder

Care notes

• Stable humidity: Maintain a damp zone and a drier zone.
• Deep substrate: Helps maintain stable microclimates.
• Provide hides: Cork bark and wood help reduce stress.
• Patience: Colonies may take time to establish.

What you’ll receive

You’ll receive healthy Cubaris “R13 Rubber Ducky” isopods from established captive-bred colonies. Sizes may vary.

Tip: Rubber Duckies thrive in deep substrate rich in rotting hardwood with consistent humidity.

Need supplies to get started? Browse our isopod substrate, leaf litter, cork bark, and setup essentials to build the perfect habitat for your colony.