Common Name: Galaxy Wood Catfish
Scientific Name: Tatia galaxias
Other Names: Starry Night Wood Catfish
The Galaxy Wood Catfish is a small, nocturnal species known for its striking dark body covered in bright white spots, resembling a starry night sky. It belongs to the Auchenipteridae family, also known as driftwood catfish, and is highly sought after for its unique appearance and peaceful nature. This species remains relatively small and is well-suited for community tanks with other peaceful fish.
Habitat and Distribution:
Native to South America, Tatia galaxias is found in slow-moving tributaries and blackwater rivers, primarily in Colombia and Venezuela. It prefers environments with dense vegetation, submerged driftwood, and leaf litter, where it can hide during the day. The water in these habitats is typically warm, soft, and slightly acidic due to tannins released by decaying organic material.
Size and Lifespan:
This species reaches a maximum size of about 3.5-4 inches (9-10 cm). With proper care, they can live for 5-8 years.
Diet and Behavior:
The Galaxy Wood Catfish is an omnivore with a preference for protein-rich foods. In the wild, they feed on small invertebrates, insect larvae, and organic detritus. In captivity, their diet should include high-quality sinking carnivore pellets, frozen or live foods such as bloodworms, blackworms, and brine shrimp, and occasional plant-based foods like algae wafers. They are nocturnal and tend to hide in driftwood or caves during the day, becoming more active at night. They are social and do best in small groups.
Breeding and Reproduction:
- Tatia galaxias* is a secretive reproductive species, meaning fertilization occurs internally. Males transfer sperm to females using modified pelvic fins, and females later lay fertilized eggs in hidden areas, such as caves or under driftwood. To encourage breeding, provide a well-structured environment with multiple hiding places and maintain stable water conditions. Fry are independent upon hatching and can be fed baby brine shrimp and finely crushed flakes.
Aquarium Care and Tank Requirements:
A minimum of 20 gallons is suitable for a small group, though larger tanks are recommended for more stable water conditions. Their ideal tank setup includes a soft sand or fine gravel substrate, plenty of driftwood and caves for hiding, low to moderate filtration with gentle water movement, and dim lighting or floating plants to create shaded areas.
Ideal Tank Mates:
The Galaxy Wood Catfish is peaceful and compatible with other small, non-aggressive fish. Suitable tank mates include Tetras (Cardinal, Rummy Nose, Ember), Corydoras, small Plecos, Dwarf Cichlids (Apistogramma), and other small driftwood catfish. Avoid large or aggressive species that may outcompete them for food or harass them.
Difficulty Level:
Beginner to Intermediate. They are hardy but require a well-structured tank with ample hiding places and a protein-rich diet.
Water Parameters:
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Temperature: 74-80°F (23-27°C)
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pH: 5.5-7.2
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General Hardness (GH): 2-10 dGH
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Carbonate Hardness (KH): 2-8 dKH
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Ammonia: 0 ppm
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Nitrite: 0 ppm
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Nitrate: <20 ppm (regular water changes required)
Additional Information:
- They are most active at night and will rarely be seen during the day unless food is introduced.
- A group of three or more will feel more secure and exhibit more natural behaviors.
- They are excellent choices for blackwater or planted aquariums where their colors stand out beautifully against dark backgrounds.
The Galaxy Wood Catfish is a stunning and peaceful species, ideal for aquarists looking to add a unique, nocturnal catfish to their community tank. With proper care, they will thrive and provide interesting activity during the evening hours.
