Silver Loach (Yasuhikotakia lecontei) Care Guide
Yasuhikotakia lecontei is a silvery Mekong-basin botiid loach with red-tipped fins, a gregarious species needing a large tank and a group.
Compiled by Aquairi from published sources · Published · Updated
Overview
The Silver Loach (Yasuhikotakia lecontei) is a silvery botiid loach with red-tipped fins, native to the Mekong and Chao Phraya river systems. It is a gregarious, active bottom-dweller that forms complex social hierarchies and, like related loaches, communicates with audible clicks. It needs a sizeable tank and the security of a group.
Taxonomy
- Family: Botiidae
- Genus: Yasuhikotakia
- Scientific name: Yasuhikotakia lecontei
- Common synonym: Botia lecontei
Habitat
The species occurs in the Mekong and Chao Phraya basins, including drainages in Thailand, Laos, Cambodia and Vietnam. It is a demersal fish of medium to large rivers with fast-flowing water and stony to rocky substrates, sheltering among rocks and roots and foraging at night.
Tank requirements
- Minimum tank volume: 300 L
- Temperature: 24-30 °C (75-86 °F)
- pH: 6.0-7.5
- GH: 5-15 °dGH
- Group size: 5 or more individuals (10+ preferred)
- Lifespan: 8-15 years
FishBase records a maximum standard length of about 15 cm for this species; aquarium accounts describe a larger, robust loach, so a long, spacious tank is recommended.
Diet
It is primarily carnivorous, feeding on mollusks and benthic invertebrates in nature. In the aquarium it requires a varied diet of quality dried foods, frozen bloodworm, Tubifex and Artemia, supplemented with vegetables such as cucumber, courgette and spinach.
Compatibility
Milder than some congeners, it should coexist reasonably peacefully with compatible tankmates. It must be kept in a group of at least five or six, preferably ten or more, because lone fish can become withdrawn or aggressive. It suits robust, active cyprinids and other large bottom-dwellers.
Conservation status
IUCN Red List: Least Concern (assessed 2011).
Silver Loach (Yasuhikotakia lecontei) Breeding Guide
Overview
The silver loach, Yasuhikotakia lecontei, is a larger silvery botiid loach from the Mekong basin. Seriously Fish reports that, like its relatives, it is a seasonal migratory spawner whose reproduction follows the monsoon hydrology of the river system.
Sexing
Seriously Fish notes that reproductively mature females typically display a more robust body shape and attain slightly larger sizes than males. Juveniles bear distinctive dark vertical bars on the sides that fade upon maturation, so these are not a sexing cue.
Spawning Behavior & Trigger
According to Seriously Fish, spawning in the Mekong basin coincides with the onset of the wet season. Adults migrate into tributary drainages where juveniles initially develop, and young fish later disperse into permanent waterways during November and December as tributary flow decreases. These large-scale migratory triggers cannot be reproduced in an aquarium.
Common Challenges
With no documented captive breeding history and a dependence on seasonal river migration, home spawning is not a realistic goal. Because the species is also not currently hormone-farmed, trade availability relies largely on wild-collected stock.