Boraras merah (1cm) are tiny, vibrant nano fish prized for their intense red coloration and peaceful schooling behavior. At just 1cm, these juveniles are ideal for grow-out in planted nano aquariums and will develop deeper red tones as they mature.

🌿 Species Overview

• Scientific Name: Boraras merah

• Common Name: Chili Rasbora

• Current Size: ~1 cm

• Adult Size: 1.5–2 cm

• Origin: Indonesia (Borneo region)

• Temperament: Extremely peaceful, schooling

One of the smallest aquarium fish in the hobby, perfect for nano aquascapes.

🎨 Appearance

• Slender micro body

• Bright red to cherry coloration (intensifies with age)

• Subtle darker lateral marking

• Best color in soft, tannin-rich water

In large groups, they create a stunning “red cloud” effect.

🐟 Behavior & Compatibility

• Keep in groups of 10 or more (larger groups = better color & confidence)

• Ideal for nano planted tanks

• Compatible with shrimp, small peaceful nano fish

• Avoid large or aggressive tank mates

They occupy mid-to-upper water levels and prefer calm environments.

💧 Ideal Water Parameters

• Temperature: 24–28°C

• pH: 4.5–6.8 (slightly acidic preferred)

• Hardness: Very soft to soft

• Water Flow: Gentle

• Stable, clean water is essential

They thrive in blackwater-style setups with leaf litter and driftwood.

🏡 Tank Setup

• Minimum Tank Size: 20–30 liters

• Fine substrate

• Dense plants (moss, stem plants, floating plants)

• Dim lighting enhances red coloration

• Plenty of cover for security

Heavily planted aquariums bring out their best behavior and color.

🍽 Feeding

• Micro pellets (nano size)

• Powdered fry food

• Baby brine shrimp, microworms

• Finely crushed flakes

Feed small portions once or twice daily.

📈 Care Level

• Difficulty: Easy to Intermediate

• Sensitive to sudden parameter changes

• Best for established aquariums

🌟 Why Choose 1cm Boraras merah?

• Perfect nano grow-out size

• One of the smallest red schooling fish available

• Ideal for shrimp tanks and aquascapes

• Vibrant coloration in groups

• Peaceful and community safe

Boraras merah are a top choice for aquascapers wanting a tiny, bright-red schooling species that adds life and movement without overwhelming a small display.