Hovering Zebra Loach

The Hovering Zebra Loach, scientifically known as Micronemacheilus cruciatus, is a diminutive and peaceful species of loach native to the coastal rivers of central Vietnam, specifically the An Lao and Phong Nha rivers.  This species is highly valued in the aquarium hobby for its striking appearance and tranquil demeanor.

Adult Micronemacheilus cruciatus typically reaches about 1.5 inches (3.8 cm) in length. They have a slender, elongated body with 14–18 black vertical stripes running from head to tail, set against a pale, translucent body with a pearlescent white belly. Their fins are transparent with subtle red or orange highlights, particularly in males. Their unique body shape and wide, laterally compressed fins make them look like a small “hatchet,” giving them their common name.

A tank of at least 10 to 15 gallons is suitable for a small group. Like most loaches, they should be kept in schools of at least 6–8 individuals to reduce stress and encourage natural behavior. The aquarium should have fine-gravel or sand substrates, as they enjoy sifting through the bottom for food. Adding plants, driftwood, and rocks will help provide hiding spots and create a more natural environment.

Water parameters for Micronemacheilus cruciatus should include a temperature range of 72 to 80°F (22 to 27°C), a pH of 6.0 to 7.0, and soft to moderately hard water. They are sensitive to poor water quality, so regular maintenance and gentle filtration are important.

Feeding Micronemacheilus cruciatus is straightforward, as they are omnivorous and accept a variety of foods. Offer high-quality sinking pellets or wafers as a staple diet, and supplement with live or frozen foods like daphnia, brine shrimp, or bloodworms. They will also graze on algae and detritus, helping to keep the substrate clean.

Micronemacheilus cruciatus is peaceful and does well in community tanks with other small, non-aggressive fish such as tetras, rasboras, and other loaches. Avoid keeping them with larger or more boisterous species that may intimidate them.

Breeding Micronemacheilus cruciatus in captivity is possible but rare. They are egg-scattering fish and require soft, slightly acidic water, as well as dense plants or spawning mops to encourage breeding. After eggs are laid, the adults should be removed to prevent them from eating the eggs.

Micronemacheilus cruciatus (Hovering Zebra Loach) is an elegant and peaceful species that adds vibrant color and movement to any softwater community aquarium.

Photo by VivienneHarper, cropped from the original, licensed under CC BY-SA 4.0.