Pinky Loach
Lepidocephalus macrochir
Also known as: Deep Water Kuhli Loach
A shy, rarely traded loach that does best with gentle companions and a soft substrate.

About
Found across Thailand, Malaysia, and Indonesia, this obscure Southeast Asian cobitid, Lepidocephalus macrochir, turns up in the hobby only occasionally and often commands a higher price than more common loaches when it does appear. It goes by several trade names including 'pinky loach' and 'deep water kuhli loach', which hints at both its coloration and its somewhat secretive nature. It's a small, slender fish that shares its genus with just one other species. The remarkable eyeless L. spectrum from Borneo. Like all true loaches in the family Cobitidae, it carries sharp sub-ocular spines that normally lie flat beneath a fold of skin but extend outward when the fish is stressed or handled, so extra care is needed when using nets to avoid tangles or injury. In the aquarium it's peaceful toward tankmates and other members of its own kind, and keeping a group of four or more really does bring out more natural behavior. The main practical challenge is that it's naturally shy and will lose out at feeding time if housed with boisterous, fast-moving loaches. Calmer companions like Pangio species, small rasboras, or pygmy gouramis are much better choices. Breeding has not been documented in captivity.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Pinky Loach
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Pinky Loach get?
- The Pinky Loach reaches about 2–3.5" as an adult.
- What size tank does the Pinky Loach need?
- A minimum of 18 gallons is recommended for the Pinky Loach, with more room needed for a proper group.
- What water parameters does the Pinky Loach need?
- The Pinky Loach does best with a temperature of 72–82°F, a pH of 5.5–7.5, hardness around 2–12 dGH.
- Is the Pinky Loach aggressive?
- The Pinky Loach is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Pinky Loach eat?
- The Pinky 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 Pinky Loach live?
- With good care, the Pinky Loach typically lives 3-5 years.