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Dwarf Horseface Loach (Acanthopsoides molobrion)

Acanthopsoides molobrion, known as the Dwarf Horseface Loach, is a small, nocturnal fish with a slender body, suitable for peaceful community aquariums.

Overview

Acanthopsoides molobrion, commonly known as the Short-tailed Loach or Dwarf Loach, is a small, slender freshwater fish native to Southeast Asia. This species typically grows to a length of 3-5 cm and has a unique appearance with its elongated body and short tail. The Short-tailed Loach is primarily nocturnal, meaning it is most active during the night. It is a peaceful species that can be kept in community tanks with other small, non-aggressive fish. With a lifespan of 2-3 years, this loach is a delightful addition to a well-maintained aquarium.

Tank Requirements

The Short-tailed Loach requires a tank with a minimum volume of 40 liters. The ideal water temperature for this species ranges from 22-28°C, with a pH level of 6.0-7.5 and general hardness (GH) between 5-12. A soft substrate, such as sand or fine gravel, is recommended to protect their delicate barbels. The tank should be well-planted, with plenty of hiding spots created by rocks, driftwood, and plants to mimic their natural environment. A dimly lit tank is preferable, as this species is nocturnal and thrives in low light conditions. Regular water changes and good filtration are essential for maintaining water quality.

Feeding and Diet

In the wild, Acanthopsoides molobrion feeds on small invertebrates and organic matter found in the substrate. In an aquarium, they should be offered a varied diet that includes high-quality sinking pellets, algae wafers, and live or frozen foods such as bloodworms, brine shrimp, and daphnia. Feeding should be done in the evening or at night to match their natural activity pattern. Providing food that sinks to the bottom of the tank is crucial, as these loaches are bottom feeders.

Care and Maintenance

The Short-tailed Loach is a hardy species, but proper care is important to ensure their well-being. Weekly water changes of 20-25% are recommended to keep the water clean and free of toxins. Regularly monitor the water parameters, particularly pH and hardness, to ensure they remain within the appropriate range. Since this species is nocturnal, maintaining a consistent lighting schedule and providing plenty of hiding places will help reduce stress. Keep an eye out for signs of disease or stress, and maintain a stable environment to keep them healthy.

Compatibility

Acanthopsoides molobrion is a peaceful species that can be kept in community tanks with other small, non-aggressive fish. They are best kept in groups of 4-6 individuals, as they are social and prefer the company of their own kind. Suitable tank mates include small tetras, rasboras, and other peaceful loaches. Avoid housing them with larger or aggressive species that may bully or outcompete them for food. Their nocturnal nature and peaceful demeanor make them a great addition to a calm, low-light aquarium.

Breeding

Breeding Acanthopsoides molobrion in captivity is difficult and rarely successful in home aquariums. They are egg-scatterers, and breeding usually requires a dedicated setup with slightly softer water and a temperature on the higher end of their range (around 26-28°C). Providing fine-leaved plants or spawning mops for the female to deposit eggs is crucial. After spawning, the adults should be removed to prevent them from eating the eggs. The eggs typically hatch in a few days, and the fry can be fed infusoria or newly hatched brine shrimp.

Note: Unverified Information

This article is part of our freshwater aquarium fish catalog and is currently unverified. The information presented here has not yet been reviewed by a specialist. Please use this content as a general reference and verify details from additional sources before making any decisions related to fish care.