Siamese Algae Eater

The Siamese Algae Eater (*Crossocheilus oblongus*) is a popular freshwater fish known for its exceptional algae-eating capabilities and peaceful nature. This species is particularly appreciated in the aquarium hobby for its ability to help control algae growth, making it a valuable addition to community tanks.

Physical Characteristics:

• Size: Siamese Algae Eaters typically grow to about 10-15 cm (4-6 inches) in length.
• Coloration: They are characterised by their elongated bodies with a dark olive-green to brown coloration, complemented by a distinct horizontal black stripe that runs along the length of their body.
• Fins: Their fins are relatively short, with a slightly forked tail that aids in agile swimming. The dorsal fin is typically positioned towards the back of the body.
• Shape: The body is slender and streamlined, allowing them to navigate through plants and decorations in the aquarium easily.

Behavior:

• Temperament: Siamese Algae Eaters are generally peaceful and can coexist with a variety of tankmates. They are more social and can often be seen interacting with their environment.
• Activity Level: They are active swimmers, known for their playful behaviour as they explore their surroundings.
• Community Behavior: These fish can be housed in community tanks, but care should be taken to select peaceful tankmates. Providing plenty of hiding spots will help reduce stress and territorial behaviour.

Aquarium Care:

• Tank Size: A minimum tank size of 80 liters (20 gallons) is recommended for a small group of Siamese Algae Eaters, though larger tanks are preferable for maintaining stable water conditions.
• Water Parameters:
  • Temperature: Siamese Algae Eaters thrive in warm water, with an ideal temperature range of 24°C to 28°C (75°F to 82°F).
  • pH: They prefer slightly acidic to neutral water, with a pH range of 6.5 to 7.5.
  • Hardness: Soft to moderately hard water, with a general hardness (GH) of 5-15 dGH, is ideal.
• Tank Setup:
  • Substrate and Decorations: A soft, sandy substrate is recommended. Siamese Algae Eaters appreciate a well-planted tank with plenty of hiding spots, as live plants such as Java fern and Anubias provide cover and mimic their natural habitat.
  • Lighting: Moderate lighting is ideal, as they can be shy in brightly lit tanks. Providing shaded areas can help them feel more secure.
  • Filtration: A gentle filtration system is recommended, as strong currents can stress these fish. Regular water changes (about 20% weekly) are essential for maintaining a clean and healthy environment.

Diet:

Siamese Algae Eaters are primarily herbivorous and require a varied diet to thrive. Their diet should include:

• Algae Wafers: High-quality algae wafers should form the staple of their diet.
• Vegetable Matter: Including blanched vegetables, such as zucchini or spinach, can help ensure a balanced diet.
• Live or Frozen Foods: Offer live or frozen foods such as brine shrimp and bloodworms occasionally to provide essential protein and variety.

Tankmates:

Siamese Algae Eaters can be housed with various peaceful tankmates, including:

• Small Tetras: Such as Neon Tetras or Rummy Nose Tetras.
• Peaceful Rasboras: Like Harlequin Rasboras.
• Other Algae Eaters: Such as Otocinclus or other peaceful bottom-dwellers.

Avoid housing them with aggressive species or fin-nippers, as this can lead to stress or injury.

Breeding:

Breeding Siamese Algae Eaters in captivity is rare, but understanding their breeding habits can be beneficial:

• Breeding Setup: A separate breeding tank with plenty of hiding spots is ideal. The water should be warm (around 26-28°C or 79-82°F) and slightly acidic (pH 6.5-7.0).
• Spawning Behavior: Males will court females, and after spawning, the female will lay eggs on a flat surface or plant leaves.
• Fry Care: Once the fry are free-swimming, they can be fed with infusoria or finely crushed flakes.

Special Considerations:

• Water Quality: Regular monitoring and maintenance of water quality are crucial for the health of Siamese Algae Eaters.
• Shy Nature: These fish can be shy, particularly in brightly lit tanks. Providing plenty of hiding spots can help them feel more secure.