Crossocheilus siamensis (Siamese Algae Eater)

Crossocheilus siamensis (Siamese Algae Eater)

Background:

Crossocheilus siamensis, commonly known as the Siamese Algae Eater, is a highly efficient and sought-after algae-cleaning fish native to freshwater streams and rivers of Southeast Asia, particularly Thailand and Malaysia. Known for its slender, torpedo-shaped body and a characteristic black horizontal stripe, this peaceful species plays an essential role in controlling algae growth in aquariums, including stubborn black beard algae (BBA).

Care Requirements:

• Water Parameters:

  • Temperature: 23–28°C (73–82°F)

  • pH: 6.0–7.5

  • Hardness: 5–12 dGH (soft to moderately hard water)

• Diet: While primarily algae grazers, Siamese Algae Eaters benefit from a balanced diet that includes algae wafers, blanched vegetables, and occasional live or frozen foods such as bloodworms and brine shrimp.

• Tank Setup: A spacious tank with a soft substrate, driftwood, rocks, and live plants provides the ideal environment for foraging. Good water flow and aeration are appreciated, replicating their natural river habitat.

• Behavior: Peaceful and active, Siamese Algae Eaters thrive in groups and are best suited for community tanks. They spend most of their time foraging along the substrate, glass, and decor.

• Tank Size: Minimum of 80 liters (20 gallons) to accommodate their active swimming behavior.

Care Tips:

• Maintain stable water parameters and perform regular water changes to ensure their long-term health.

• Supplement their diet with additional food sources if natural algae growth becomes insufficient.

• Avoid overcrowding and provide plenty of swimming space to support their active nature.

• Identify true Siamese Algae Eaters carefully, as they are often confused with similar species like Flying Fox Fish.

Suitable Tank Mates:

• Tetras (e.g., Neon Tetras, Rummy-Nose Tetras)

• Rasboras

• Corydoras Catfish

• Gouramis

• Otocinclus Catfish

• Peaceful Shrimp (e.g., Amano Shrimp)

Crossocheilus siamensis is an essential addition to any aquarium focused on algae control, offering both practical cleaning abilities and active, peaceful behavior. Their low-maintenance care requirements and effectiveness in tackling tough algae make them a favorite among aquarists.