Easy

Neon Tetra

By The Aquarium Calculators Editorial Team ·

Paracheirodon innesi

Complete Neon Tetra care guide covering omnivore diet requirements, peaceful temperament, minimum 10 Gallons tank setup, and compatible freshwater tankmates. Difficulty: Easy.

Neon Tetra

Quick Answer

Neon Tetras (Paracheirodon innesi) are iconic freshwater fish originating from the clear water streams and blackwater tributaries of the Amazon basin in South America. It requires a minimum 10 Gallons aquarium with a pH of 6.0 - 7.0 and temperature range of 20-26°C. This omnivore occupies the middle zone and makes an excellent addition to community setups.

Intro

Neon Tetras (Paracheirodon innesi) are iconic freshwater fish originating from the clear water streams and blackwater tributaries of the Amazon basin in South America. Characterized by their brilliant iridescent neon blue and bright red horizontal stripes, they are a staple of the aquascaping and community fishkeeping hobby.

Setup

Neon Tetras require a well-established aquarium of at least 10 gallons. They thrive in planted tanks with dark substrates and dim lighting, which mimics their natural blackwater habitat. Water must be soft and slightly acidic, with a stable pH between 6.0 and 7.0.

Feeding

Neon Tetras are omnivorous and not picky eaters. They do best with high-quality micro pellets or flakes as their base diet, supplemented with baby brine shrimp, daphnia, and high-protein freeze-dried or frozen foods.

Compatibility

These peaceful schooling fish MUST be kept in groups of at least 6 to 10 individuals to feel secure and behave naturally. Good tankmates include other peaceful community fish like Guppies, Harlequin Rasboras, and Corydoras catfish.

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Tank Position
Middle
Water Temp
20-26°C
Adult Size
See profile
Water pH
6.0 - 7.0

Species Characteristics

Adult Size
Lifespan
Growth Rate
moderate
Tank Compatibility
Community compatible
Indoor Aquarium
Yes

Water Parameters

Water Temperature
Humidity
Water pH

Tank Lighting

Tank Lighting
Standard lighting
Light Hours
N/A
Intensity
moderate

Feeding & Diet

Diet Type
Diet: Omnivore
Feeding Schedule
N/A
Live Food Options
N/A

Frequently Asked Questions

How many Neon Tetras should be kept together?
Maintain a minimum school of 10 to 15 individuals in a tank of at least 15 gallons (57 liters) with a footprint of 24x12 inches (60x30 cm). Neon tetras (Paracheirodon innesi) are schooling fish that display their brilliant blue-red stripes optimally in groups over 12. Groups under 8 cause chronic stress, faded colors, and susceptibility to disease. A school of 20+ creates natural shoaling dynamics. Provide dark substrate, dim lighting, and floating plants. Tank length must exceed 24 inches (60 cm). Avoid large tank mates that may prey on them.
What are the exact water parameters for Neon Tetras?
Target pH 6.0 - 7.0 (optimal 6.5), General Hardness 2 - 6 dGH, Carbonate Hardness 2 - 5 dKH, Total Dissolved Solids 50 - 150 ppm, Electrical Conductivity 100 - 300 μS/cm, and temperature 70°F - 78°F (21°C - 26°C). They prefer soft, slightly acidic water; hard water (dGH >10) causes kidney failure and reduced lifespan. Maintain nitrates below 15 ppm with weekly 20% water changes. Use a sponge filter with gentle flow. Add driftwood and Indian almond leaves. Avoid alkaline substrates and sudden pH shifts.
What is the dietary and medication protocol for Neon Tetras?
They are omnivores requiring 35% protein, 10% fat, 55% plant matter. Feed high-quality micro-pellets, crushed flakes, frozen daphnia, baby brine shrimp, and cyclops twice daily. Offer spirulina powder weekly. Medication alert: Sensitive to copper (0.1 mg/L max) and formalin. Use malachite green at quarter dose (0.025 mg/L) for ich. Praziquantel is safe. Avoid salt (tolerance <3 ppt). Quarantine with methylene blue at half-strength. Highly susceptible to neon tetra disease (Pleistophora); remove infected fish immediately.
How to breed Neon Tetras in captivity?
Select 12-15 mature fish (1 year old) and condition with live baby brine shrimp and blackworms for 3 weeks. Set up a 10-gallon (38 liter) breeding tank with 4 inches (10 cm) of RO water (pH 6.0, 1 dGH, 76°F/24°C), a spawning mop, and very dim light (cover sides). Simulate dawn with a single 1-watt LED. Spawning occurs in absolute darkness; female releases 100-200 eggs. Remove parents after 6 hours. Eggs hatch in 24-30 hours. Fry are light-sensitive; keep tank covered. Feed infusoria for 5 days, then microworms, then baby brine shrimp after day 10.