Laos Blackline Torpedo Loach Care Guide
Nemacheilus longistriatus · Freshwater Fish

What Laos Blackline Torpedo Loach look like
The Laos Blackline Torpedo Loach (Nemacheilus longistriatus) exhibits a fusiform, elongated body that typically reaches a maximum adult size of 5-15 cm. Its most distinguishing feature is the bold, dark horizontal stripe that runs the length of its streamlined body, which aids in camouflage against the substrate in its natural habitat. The species possesses a laterally compressed form, which enhances its agility in fast-flowing waters. Sexual dimorphism is subtle, with males generally being slightly smaller and more slender than females, particularly during the breeding season when males may display more pronounced coloration. The loach has a well-developed lateral line system, which is critical for detecting movement and vibrations in the water. Its dentition is adapted for a benthic lifestyle, featuring small, fine teeth suited for scraping algae and detritus from surfaces. The presence of an adipose fin further enhances its hydrodynamic profile, allowing for swift movements in turbulent environments.
Behavior & temperament
The Laos Blackline Torpedo Loach is primarily a benthic species, often found dwelling near the substrate of fast-flowing streams and rivers. It exhibits a social hierarchy typical of loaches, often forming small groups or schools, especially during feeding. This species is known for its active and agile behavior, darting quickly in response to perceived threats. Breeding behavior involves egg scattering, where females release eggs among gravel or rocky substrates, and males may exhibit territorial displays during this time. The species is generally peaceful but can exhibit mild aggression when competing for food or territory, particularly in confined spaces.
Diet & feeding
In the wild, the Laos Blackline Torpedo Loach is an omnivore, feeding on a varied diet that includes algae, detritus, and small invertebrates. In captivity, it requires a balanced diet consisting of high-quality sinking pellets, supplemented with live or frozen foods such as bloodworms and brine shrimp to ensure optimal health and coloration.
Behind the name
Nemacheilus (Greek: nema - thread; cheilos - lip); longistriatus (Latin: longus - long; striatus - striped).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
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