Blue King Tetra: Fish Species Profile

Characteristics

• Scientific Name: Boehlkea fredcochui
• Family: Characidae
• Origin: Amazon Basin, South America
• Social Behavior: Peaceful, schooling fish
• Tank Level: Middle regions
• Minimum Tank Size: 20 gallons
• Diet: Omnivore
• Breeding Method: Egg layer
• Care Level: Intermediate
• Preferred pH Range: 5.5 to 7.0
• Water Hardness: 5 to 12 dGH
• Temperature Range: 72 to 78°F (22 to 26°C)

Origin and Distribution

The Blue King Tetra, also known as Cochu’s Blue Tetra, is native to the Amazon Basin in South America, particularly in regions of Colombia and Brazil. These fish inhabit clear, fast-flowing rivers and streams with dense vegetation, providing ample cover and feeding opportunities.

Colors and Markings

Blue King Tetras are renowned for their vibrant blue coloration, which can exhibit iridescent hues under proper lighting. Their slender, streamlined bodies are complemented by translucent fins, often displaying subtle hints of pink or red. Males typically exhibit more intense coloration compared to females.

Tankmates

Due to their peaceful nature, Blue King Tetras are well-suited for community aquariums. Compatible tankmates include:

• Other small tetras (e.g., Neon Tetras, Cardinal Tetras)
• Rasboras
• Corydoras catfish
• Dwarf gouramis
• Small, peaceful barbs

It’s advisable to avoid housing them with larger, aggressive species that may exhibit fin-nipping behavior or view them as prey.

Care

Blue King Tetras are relatively hardy but require specific conditions to thrive:

• Tank Setup: Provide a well-planted aquarium with open areas for swimming. Incorporate driftwood and rocks to mimic their natural habitat.
• Water Parameters: Maintain stable water conditions within the preferred ranges. Regular water changes and efficient filtration are essential to keep ammonia and nitrate levels low.
• Lighting: Moderate lighting is suitable, as it enhances their coloration without causing stress.
• Group Size: Keep them in groups of at least six to promote natural schooling behavior and reduce stress.

Diet and Feeding

As omnivores, Blue King Tetras thrive on a varied diet:

• Staple Foods: High-quality flake or pellet foods formulated for tropical fish.
• Supplements: Live or frozen foods such as brine shrimp, daphnia, and bloodworms.
• Feeding Frequency: Offer small amounts multiple times a day, ensuring they consume all the food within a few minutes to prevent overfeeding and maintain water quality.

Gender Differences

Males are generally more slender and exhibit more vibrant coloration compared to females. Females tend to be slightly larger with a rounder abdomen, especially when carrying eggs.

Breeding

Breeding Blue King Tetras in captivity can be challenging but is achievable with proper conditions:

• Breeding Tank: Set up a separate tank with soft, slightly acidic water and a temperature around 77°F (25°C). Provide fine-leaved plants or spawning mops for egg deposition.
• Spawning: Condition the breeding pair with high-quality live or frozen foods. The female will scatter eggs among the plants, and the male will fertilize them.
• Post-Spawning: Remove the adults after spawning to prevent them from eating the eggs. Eggs typically hatch within 24 to 36 hours.
• Fry Care: Feed the fry infusoria or commercially available liquid fry food until they are large enough to accept finely crushed flake food or baby brine shrimp.

Further Research

For more detailed information on Blue King Tetra care, breeding techniques, and tank setups, consider exploring specialized aquarium literature or consulting with experienced aquarists.

FAQ

How many Blue King Tetras should I keep together? It’s recommended to keep them in groups of at least six to promote natural schooling behavior and reduce stress.

Are Blue King Tetras suitable for beginners? While they are relatively hardy, their sensitivity to water parameter fluctuations makes them more suitable for aquarists with some experience.

Can Blue King Tetras live with betta fish? Due to their peaceful nature, they can coexist with bettas in a community tank, provided the tank is spacious and has ample hiding spots. Monitor interactions closely to ensure compatibility.

This profile provides an overview of Blue King Tetras, highlighting their care requirements and characteristics to assist aquarists in maintaining a healthy and vibrant aquarium.