Long-faced Loach
Acantopsis octoactinotos
A slender, sand-diving loach with a distinctively elongated snout.

About
The long-faced loach (Acantopsis octoactinotos) is a slender, bottom-dwelling fish native to the freshwater systems of Indonesia and Malaysia, where it spends much of its time buried in sandy substrates waiting for food to drift by. That elongated, pointed snout, the feature that gives this species its common name, is perfectly shaped for rooting through sediment in search of small invertebrates and organic matter. In the aquarium, this burrowing behavior is just as pronounced, and a soft sandy substrate is really non-negotiable if you want to keep one happy and healthy. Without it, you'll have a stressed fish and likely a scratched-up snout. Adults reach a modest size, and while they're not schooling fish in the traditional sense, keeping more than one tends to bring out more natural behavior and reduces skittishness. They're peaceful toward tankmates but can be easily spooked, so avoid pairing them with boisterous or fast-moving species. Water quality matters here. These aren't the hardiest of loaches, which is why they're typically recommended for keepers who already have some experience managing stable, well-filtered setups. Given the right conditions, they're genuinely interesting fish to observe.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Long-faced Loach
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Long-faced Loach get?
- The Long-faced Loach reaches about 2.5–4.5" as an adult.
- What size tank does the Long-faced Loach need?
- A minimum of 35 gallons is recommended for the Long-faced Loach.
- What water parameters does the Long-faced Loach need?
- The Long-faced Loach does best with a temperature of 72–82°F, a pH of 6–7.5, hardness around 1–12 dGH.
- Is the Long-faced Loach aggressive?
- The Long-faced Loach is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Long-faced Loach eat?
- The Long-faced Loach is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Long-faced Loach live?
- With good care, the Long-faced Loach typically lives 5-8 years.