Red Laser Tetra (Hemigrammus coeruleus)

Red Laser Tetra (Hemigrammus coeruleus)

The Red Laser Tetra is a rare and eye-catching nano species that stands out with its glowing red lateral stripe that runs clean through the body like a laser beam. Native to the Amazon Basin, this species combines subtle transparency with intense coloration, creating a stunning contrast that truly pops under proper lighting.

Unlike many common tetras, Hemigrammus coeruleus has a more refined and elegant appearance, making it a perfect addition to high-end planted tanks or display aquariums. When kept in groups, their synchronized schooling behavior creates a mesmerizing “laser line” effect as they move through the water column.

Peaceful and relatively hardy once established, the Red Laser Tetra thrives in stable, well-maintained aquariums with soft, slightly acidic water. Due to its rarity in the hobby, this species is highly sought after by collectors looking for something unique beyond standard tetra varieties.

Tank Requirements

• Minimum Tank Size: 20 gallons
• Temperature: 74–82°F
• pH: 5.5–7.0
• Water Hardness: Soft to moderate
• Lighting: Moderate to high (enhances coloration)

Diet

Omnivorous
Will accept a variety of foods:

• High-quality micro pellets
• Flake food
• Frozen foods (daphnia, baby brine shrimp, bloodworms)

Tank Mates

• Peaceful community fish
• Other small tetras, rasboras, dwarf cichlids
• Avoid large or aggressive predators

Why We Love This Fish

• Rare and uncommon tetra species
• Bright “laser-like” red stripe
• Beautiful schooling behavior
• Perfect for planted and aquascape tanks

The Red Laser Tetra is a perfect choice for hobbyists looking to elevate their aquarium with a rare, vibrant schooling fish that brings both movement and color to any setup.