Carinotetraodon borneensis – Bornean Freshwater Puffer for Planted Aquariums

Carinotetraodon borneensis is a small, colorful freshwater pufferfish from Borneo, known for its curiosity, intelligence, and playful behavior—perfect for planted and species-only tanks.

🌿 Species Overview

• Scientific Name: Carinotetraodon borneensis

• Common Name: Bornean Puffer, Borneo Freshwater Puffer

• Origin: Borneo, Southeast Asia

• Habitat: Slow-moving rivers, streams, and peat swamps with dense vegetation

• Temperament: Semi-aggressive; inquisitive and active

Carinotetraodon borneensis is a small, charismatic pufferfish prized by hobbyists for its interactive behavior and striking appearance. It is suitable for species-only or carefully planned community setups with non-aggressive tank mates.

🎨 Appearance & Coloration

• Small, roundish body with characteristic puffer shape

• Olive to brown base coloration with dark spots or reticulated patterns

• Bright eyes and subtle iridescence under proper lighting

• Capable of inflating its body when threatened

• Juveniles display more vivid spotting; adults develop more muted tones

Its unique puffing behavior and inquisitive nature make it a standout in smaller aquariums.

📏 Size & Lifespan

• Adult Size: 4–5 cm (1.5–2 inches)

• Juvenile Size: 2–3 cm (0.8–1.2 inches)

• Lifespan: 5–8 years with proper care

Though small, Bornean puffers require ample space relative to their size due to their active swimming and territorial behavior.

💧 Water Conditions

Carinotetraodon borneensis prefers soft, slightly acidic water:

• Temperature: 24°C – 28°C

• pH: 6.0 – 7.0

• Hardness: 2–10 dGH

• Water Flow: Gentle

• Filtration: Sponge filter or gentle canister filter

• Environment: Heavily planted aquariums with driftwood, rocks, and hiding spots

Stable water quality is essential; puffers are sensitive to poor water parameters.

🏡 Tank Setup Recommendations

• Minimum Tank Size: 20 gallons for a small group of 3–5

• Substrate: Fine sand or smooth gravel

• Lighting: Moderate; prefers shaded areas

• Plants: Java fern, Anubias, Cryptocoryne, floating plants

• Decor: Driftwood, rock caves, PVC tubes, and leaf litter for hiding

Dense planting and hiding spaces reduce stress and mimic their natural habitat.

🐟 Tank Mates Compatibility

• Best kept in species-only or with very small, non-aggressive fish

• Avoid fin-nippers and fast-moving schooling fish

• Can be territorial; multiple hiding spots reduce aggression

Small shrimp and snails may be eaten.

🍽 Feeding Habit

• Carnivorous, with preference for meaty foods

• Diet Recommendations:

  • Frozen or live foods: bloodworms, brine shrimp, daphnia, snails

  • Occasional high-quality sinking pellets designed for puffers

  • Avoid overfeeding; puffers are prone to digestive issues

Feed 1–2 times daily in small portions to ensure proper nutrition without water fouling.

🛠 Care Level

• Difficulty: Intermediate

• Requires stable water, proper filtration, and frequent observation

• Sensitive to water quality and overfeeding

• Ideal for aquarists experienced with small freshwater puffers

🌟 Why Choose Carinotetraodon borneensis?

• Small, colorful, and active freshwater puffer

• Intelligent and interactive behavior

• Striking spotted pattern and ability to inflate

• Perfect for species-only or planted community tanks

• Long-lived with proper care and diet

Carinotetraodon borneensis is a charming, playful, and visually captivating freshwater puffer that adds personality and intrigue to planted aquariums. Its unique behavior, bright markings, and small size make it ideal for aquarists seeking an active and interactive centerpiece fish.