Long-nosed Loach

The appearance of the Long-nosed Loach resembles its close relatives – the Horseface Loach and Acantopsis molobrion. Adults reach about 10 cm in length, with an elongated body and a large, elongated head with relatively high-set eyes. The fish's fins are short. The coloration is predominantly gray, with a silvery belly; a characteristic feature is a row of black dots running along the lateral line, as well as a pattern of dark speckles on the back. Sexual dimorphism is weakly expressed, making sex determination difficult. The only exception is males, which are typically slightly smaller and more slender.

The Long-nosed Loach inhabits freshwater bodies in Indonesia and, according to some data, Malaysia. In nature, this species populates flowing riverbeds with sandy, silty, or fine gravel bottoms. The fish prefer areas with clear water and moderate current, sometimes migrating into temporarily flooded zones during the rainy season.

A distinctive feature of this fish is its peaceful and calm disposition; it can sometimes be timid. In case of danger, the Long-nosed Loach immediately seeks cover, often burying itself in sandy substrate. The fish becomes most active in the evening hours. It coexists well with its own kind and with many other non-aggressive species of comparable size. When choosing tank mates, it is recommended to opt for fish that prefer to inhabit the water column or surface.

The optimal aquarium volume for a group of 3–4 individuals starts from 100–120 liters. In aquarium design, a soft substrate is important and should be placed in at least one area of the bottom. The root systems of rooted plants may be damaged or uprooted by the Long-nosed Loach, as it actively digs in the substrate. For such plants, it is recommended to use special pots embedded in the substrate. Plants that can attach to hard surfaces, such as Anubias, Bucephalandra, various types of aquatic mosses, and ferns, are also suitable. This species will be an excellent choice for a tropical aquarium, as it is considered undemanding, hardy, and easy to keep, preferring soft, slightly acidic water.

The Long-nosed Loach is omnivorous, so its daily diet can consist of a variety of popular dry sinking foods, such as flakes and pellets.

Breeding is not documented. Loaches of this type are presumed to be seasonal spawners in nature, triggered by the arrival of the rains, but in captivity spawning does not occur. The fish spends most of its time buried in sand, which makes both observation and pairing that much harder.

The species is sensitive to water quality, making it susceptible to bacterial and parasitic infections if husbandry conditions are not met. The most common diseases are those affecting the skin and fins, such as ich (Ichthyophthirius multifiliis) or bacterial necrosis. Prevention includes maintaining stable environmental parameters, effective filtration, and regular water changes.

When selecting individuals, attention should be paid to the condition of the skin: there should be no spots, ulcers, or visible damage on the body. A healthy fish is active but may be timid. It is important to ensure that the fish shows no signs of emaciation and that its breathing is even. Avoid purchasing individuals that appear lethargic or show signs of fin damage, as they may be weakened by stress or poor transport conditions.