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Here is a complete care guide and profile for the Glowlight Tetra, a peaceful and visually appealing freshwater fish ideal for community aquariums.
🐟 Glowlight Tetra – Full Details & Care Guide
✅ Common Names:
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Glowlight Tetra
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Fire Neon Tetra
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Glolite Tetra
🔬 Scientific Classification:
| Category | Detail |
|---|---|
| Scientific Name | Hemigrammus erythrozonus |
| Family | Characidae |
| Order | Characiformes |
| Origin | Essequibo River, Guyana (South America) |
| Type | Freshwater tropical tetra |
🎨 Appearance:
| Feature | Description |
|---|---|
| Body Shape | Slender, torpedo-shaped |
| Color | Translucent silver or beige body |
| Highlight | Glowing neon orange-red stripe from nose to tail (resembles a glowing filament) |
| Size | 1.5 to 2 inches (3.8 to 5 cm) |
| Lifespan | 3 – 5 years in good conditions |
✨ The glowing stripe is especially vibrant under aquarium lighting with dark substrate and plants.
🌡️ Water Parameters:
| Parameter | Ideal Range |
|---|---|
| Temperature | 22 – 28°C (72 – 82°F) |
| pH Level | 6.0 – 7.5 (slightly acidic preferred) |
| Hardness | 4 – 12 dGH |
| Water Type | Soft, clean, well-filtered freshwater |
🏡 Tank Setup:
| Feature | Recommendation |
|---|---|
| Tank Size | Minimum 15–20 gallons |
| Group Size | Keep in groups of 6 or more (schooling fish) |
| Substrate | Dark sand or fine gravel |
| Plants | Heavily planted (Java fern, Anubias, Amazon sword) |
| Decor | Driftwood, rocks, caves |
| Lighting | Dim to moderate (brings out the glow effect) |
| Filtration | Gentle to moderate flow (sponge or canister filter) |
🧪 Always cycle your aquarium and maintain stable water conditions – tetras are sensitive to fluctuations.
🧬 Temperament & Behavior:
| Trait | Description |
|---|---|
| Temperament | Peaceful, calm |
| Schooling | Yes, thrives in shoals of 6+ |
| Tank Zone | Middle to upper levels |
| Social Behavior | Great community fish |
| Activity Level | Active but not aggressive |
🍽️ Feeding:
| Food Type | Examples |
|---|---|
| Staple Diet | Micro pellets, tropical flakes |
| Live/Frozen | Daphnia, baby brine shrimp, bloodworms |
| Vegetables | Finely chopped spinach or algae-based food |
| Feeding Frequency | 2–3 small meals per day |
✅ Provide a varied diet to enhance color and health.
🐣 Breeding Glowlight Tetras:
| Feature | Description |
|---|---|
| Breeding Type | Egg scatterers |
| Spawning Tank | Use a separate breeding tank (soft, acidic water ~pH 6.0) |
| Conditions | Add fine-leaved plants or spawning mops |
| Spawning Behavior | Pair dances; eggs scattered and fertilized |
| Egg Count | 100 – 150 per pair |
| Fry Care | Remove parents after spawning; fry hatch in 24–36 hours |
| Fry Feeding | Infusoria → baby brine shrimp after 4–5 days |
🤝 Ideal Tank Mates:
| ✅ Compatible Species | ❌ Avoid These Species |
|---|---|
| Neon Tetras | Aggressive cichlids |
| Ember Tetras | Tiger Barbs |
| Corydoras Catfish | Large predatory fish |
| Harlequin Rasboras | Betta (may vary by individual) |
| Otocinclus | Fin-nippers or overly active species |
🧼 Maintenance Tips:
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Perform 25–30% water changes weekly
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Keep water free of ammonia/nitrite (0 ppm)
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Regularly check filter, trim plants, and vacuum substrate
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Stable water temperature and pH are key to their health
🧾 Quick Profile Summary:
| Feature | Value |
|---|---|
| Scientific Name | Hemigrammus erythrozonus |
| Common Name | Glowlight Tetra |
| Size | 1.5 – 2 inches |
| Lifespan | 3 – 5 years |
| Temperament | Peaceful |
| Tank Size | 15+ gallons |
| School Size | Minimum 6 |
| Swimming Zone | Mid to top |
| Diet | Omnivore |
| Care Level | Beginner to intermediate |
🌟 Highlights:
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✨ Iconic glowing red-orange stripe that shines in planted tanks
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🐟 Peaceful schooling fish, great for community setups
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🌿 Pairs beautifully with live plants and soft lighting
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💧 Sensitive to poor water quality – needs regular care
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