Tetra Longfish Glofish

Longfin GloFish Tetra (Gymnocorymbus ternetzi)

The Longfin GloFish Tetra is a genetically enhanced version of the classic Black Skirt Tetra, known for its flowing fins and vibrant fluorescent colors under aquarium lighting. These fish are active, peaceful, and ideal for community tanks, making them a great choice for both beginners and experienced hobbyists.

Water Parameters

• Temperature: 72–78°F (22–26°C)
  Ideal range: 75–78°F
• pH: 6.0 – 7.5
• Water Hardness: Soft to moderately hard
• Tank Size: Minimum 10–20 gallons
• Group Size: Keep in schools of 5–6 or more

Diet & Feeding

These fish are omnivores and easy to feed.

Staple Foods:

• High-quality flakes or micro pellets (community fish food)

Protein / Treats:

• Frozen brine shrimp
• Frozen bloodworms
• Daphnia

Feeding Tips:

• Feed 1–2 times daily
• Only feed what they can consume within 30–60 seconds
• Rotate between dry and frozen foods for optimal health and coloration

Behavior & Tank Mates

• Generally peaceful but may nip fins if kept in small groups
• Active swimmers that do best in groups
• Prefer planted tanks with open swimming areas

Compatible Tank Mates:

• Other tetras
• Corydoras
• Rasboras
• Guppies (with caution)
• Small gouramis

Tank Setup

• Include plants or décor for cover
• Moderate lighting enhances their coloration
• Gentle to moderate water flow

Key Benefits

• Bright, fluorescent colors
• Hardy and beginner-friendly
• Ideal for community aquariums
• Active and visually appealing