Horseface Loach Tropical Fish Information

Acantopsis dialuzona
Horseface Loach
Behaviour Peaceful scavenger and burrower
Typical size 20cm
Max size 25cm
Tank Area Bottom
Min Tank Size 120cm
Min Number in Tank 3
Temp Min: 25℃ Max: 29℃
Feeding Sinking, frozen, live foods
pH Range 6-7.5
Hardness vs,s,m
Horseface Loach Acantopsis choirorhynchos close up
  • Horseface Loach Acantopsis choirorhynchos close up - thumbnail
  • Horseface Loach Acantopsis choirorhynchos close up - thumbnail
  • Horseface Loach Acantopsis choirorhynchos - thumbnail

Horseface Loach (Acantopsis dialuzona)

Horseface Loach Tropical Fish Learn all about the Horseface Loach's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Horseface Loach is the right fish for your aquarium.

The Horseface loach is so-called because of its characteristic head shape and snout. As with other bottom dwelling scavengers, the Horseface loach will need to be kept in an aquarium with a sandy or fine-gravel bottom - sharp gravel will damage the fishes body. This particular species will quite often bury itself almost completely, with just its eyes poking above the substrate. Because of this habit, and its nocturnal nature, it may only be seen occasionally or at feeding times and care should be taken when disturbing the substrate (such as when gravel cleaning) Its active nature and digging habits require that any plants are potted or well rooted in position. Occasionally, the loach will move its eyes in what looks like a blinking motion, adding to its already large character. Horseface loaches can grow up to 30cm, but about 20-25cm is more common in aquariums so a reasonably large tank is required. Although peaceful, adults may fight so single specimens or large groups may be preferable.


The horseface loach is a good scavenging fish and very interesting to observe, although they can have a habit of remaining hidden for long periods. Can be kept with most fish without problems. Although soft water is preferred, they will adapt to a wide range of conditions. A similar species, Acantopsis octoactinotos, sometimes called Longnose Loach, is slower moving, more aggressive, and does not burrow. The Horseface loach can be identified by a downturn in the nose - the Longnose Loach has a flat nose.

Horseface Loach Facts

Family Cobitidae (Loaches) | Synonyms Acanthopsis dialuzona, Cobitis choirorhynchos | Other names Longnose Loach, Horsehead Loach | Origin Asia: Thailand, Malaysia, Indonesia, India | Breeding Unknown | Natural Water Conditions Soft & slightly acidic, clear | Natural Habitat Clear, flowing streams and rivers with sandy or gravel bottoms | Sexing Large females may appear rounder

Horseface Loach Help and Advice

If you have a question about keeping Horseface Loach's then please use our Horseface Loach help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

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Check tank mates for the Horseface Loach fish species

You are in the thinkfish community creator for the Horseface Loach fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Horseface Loach species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Horseface Loach information box above and your local water company providers website. Don't waste your money and endanger your fish!
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