Common Name: Purple Imperial Loach
Scientific Name: Leptobotia taeniops
The Purple Imperial Loach is a wild-caught loach from China. It is an active botiid loach with a banded pattern and, as its trade name suggests, purplish tones. Like other botiid loaches, it has a small, erectile spine below each eye that it can raise in defense. It is an unusual and interesting fish that is highly prized by aquarists who enjoy Asian species.
Habitat and Distribution:
Leptobotia taeniops is native to the middle and upper Yangtze River basin of China, where it lives in cool, well-oxygenated rivers with strong flow. Leptobotia loaches are bottom-dwellers that shelter among rocks and gravel in these flowing waters.
Size and Lifespan:
It reaches about 6 inches (15 cm). Lifespan in captivity is not well documented for this species, but with good care it can be expected to live for many years.
Diet and Behavior:
It is omnivorous and forages on the bottom for small invertebrates, snails and insect larvae in the wild. In the aquarium, offer sinking pellets and wafers, bloodworms, snails and small crustaceans. It is an active, sociable loach that is best kept in a small group, where it will establish a pecking order. Feed a varied diet and remove uneaten food promptly to protect water quality.
Breeding and Reproduction:
It is not bred in home aquariums; fish in the trade are wild-caught. Little is documented about its breeding habits in the wild.
Aquarium Care and Tank Requirements:
A tank of at least 55 gallons (4 feet long) is recommended. Provide rockwork and caves, a smooth gravel or sand substrate to protect its barbels, strong water movement and cool, well-oxygenated water. Many keepers use a chiller or keep the tank in a cool room to maintain suitable temperatures. The water temperature should be kept between 60-72°F (16-22°C), with a pH of 6.5-7.5 and soft to hard water. Efficient filtration and regular partial water changes are essential to maintain water quality, and new arrivals should be acclimated slowly.
Ideal Tank Mates:
Good tank mates include other fish that prefer cool, fast-flowing water, such as hillstream loaches, danios and White Cloud Mountain minnows. Avoid tropical fish that need warm water. As with any aquarium, introduce new fish carefully and watch for signs of stress or aggression.
Difficulty Level:
Intermediate. It needs cooler water than most tropical fish and good water movement. It is well suited to aquarists with some experience who can maintain stable water conditions.
Water Parameters:
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Temperature: 60-72°F (16-22°C)
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pH: 6.5-7.5
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General Hardness (GH): 5-15 dGH
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Carbonate Hardness (KH): 4-10 dKH
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Ammonia: 0 ppm
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Nitrite: 0 ppm
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Nitrate: <20 ppm (regular water changes required)
Additional Information:
- It comes from cool, fast-flowing rivers, so a chiller may be needed in warm climates.
- Like other botiid loaches, it has a small spine below each eye, so take care when netting.
- Keep it in a small group with rockwork and caves.
The Purple Imperial Loach is an uncommon, active loach for coolwater aquariums. With the right setup and care, it will be a rewarding addition for many years.
