Cambodian log sucker Breeding Guide

Breeding the Cambodian Log Sucker in home aquariums is extremely rare and not well understood, largely due to their specific environmental needs and natural behaviours tied to seasonal river changes. Most specimens available in the trade are wild-caught, and there are few confirmed reports of successful spawning in captivity.

Natural Breeding Conditions

In the wild, Garra cambodgiensis breeds during the rainy season when water levels rise and flow becomes stronger. These environmental cues trigger spawning behaviours, which may include:

• Changes in water chemistry (lower temperatures and softer water)
• Increased oxygenation
• Stronger water current simulating stream inflow
• Access to clean, rocky spawning sites

Behavioural Signs

Mature males may develop slightly more intense colouring and show mild territorial behaviour. During courtship, they may chase females and nudge them toward potential spawning surfaces like smooth stones or submerged wood.

Aquarium Breeding Setup

To even attempt breeding in captivity, a separate, well-maintained tank with seasonal simulation is recommended:

• Tank Size: 100+ litres with good horizontal space
• Substrate: Smooth pebbles and large stones for egg deposition
• Current: Strong, with powerheads or spray bars to simulate river flow
• Water Conditions: Slightly cooler (around 22°C), soft (4–6 dGH), and neutral to slightly acidic (pH 6.5–7.0)
• Lighting: Dim to moderate
• Diet: Condition with high-quality plant-based foods and occasional protein sources

Introduce a small group (1 male to 2–3 females) and gradually lower the temperature while increasing flow and water changes to mimic seasonal rain.

Challenges

• Egg scattering: Garra species are believed to be egg scatterers with no parental care. Eggs may be eaten if not removed.
• Fungus risk: Without high oxygenation and clean surfaces, eggs may quickly develop fungus.
• Lack of documentation: There is no widely accepted method, and attempts are largely experimental.

Conclusion

While not impossible, breeding Cambodian Log Suckers is a long-term project best suited for experienced aquarists who enjoy creating biotope-style setups and simulating natural conditions. Most hobbyists will find these fish more rewarding for their algae-eating abilities and unique behaviour than for breeding potential.