Paracanthocobitis botia – Mottled Loach
Paracanthocobitis botia was first described by Francis Hamilton in 1822. This species is commonly known as the Mottled Loach.
The genus name is derived from the Greek word “akantha” meaning “thorn” and “kobitis” meaning a type of small fish. “Para” means “beside” or “near”, indicating that these fish are closely related to the genus Acanthocobitis. The species name “botia” is a Latin term often used to describe several species of loaches.
Synonyms: Acanthocobitis botia, Botia nebulosa, Cobitis botia, Nemacheilus botia, Nemacheilus botia botia, Nemachilus botia, Nemachilus mackenziei.
Description
The Paracanthocobitis botia has an elongated and cylindrical body shape at the front, gradually becoming more compressed toward the tail. This fish features 10 to 11 branched rays in its dorsal fin, 10 to 12 rays in its pectoral fin, 8 rays in its pelvic fin, and 6 rays in its anal fin. Additionally, the caudal fin is concave in shape.
The Mottled Loach has a marbled pattern with dark saddle-shaped markings along the back and upper body. Along the lateral line, there is a series of circular to triangular markings that are often interconnected. The head is covered with medium to large brown spots and there is a dark spot on the operculum. The caudal fin has five V-shaped bands.
Adult specimens can reach a maximum length of about 11 centimeters.
Sexual Dimorphism
There is no clear distinction between males and females in this species, so identifying the sexes can be quite challenging.
Behavior and temperament
Paracanthocobitis botia is a peaceful fish that lives well with other peaceful species. They are active and make a good addition to a community aquarium. These fish usually live in groups and are bottom dwellers. They are not shy and will quickly feel at ease in an aquarium with sufficient hiding places. They are diurnal (active during the day) and like an environment with current, such as that created by a powerhead in the aquarium. They like to dig in the sand or gravel on the bottom of the aquarium.
Biotope
Paracanthocobitis botia is native to India, Bangladesh, Nepal, Myanmar, Pakistan, Bhutan, Thailand, and China. In India, they are found in the Brahmaputra River and its tributaries in Assam, as well as in the Dolong River, a tributary of the Mansai River in West Bengal, and in the Manguraha Ranges of the Balmiki Tiger Reserve in Bihar.
They occur in the basins of several major rivers, including the Indus, Ganges, Brahmaputra, Chindwin, Irrawaddy, Salween, Mae Khlong and Sitang.
Natural habitat
They live in clear, fast-flowing streams and rivers with rocky, pebbly, or sandy bottoms. There is usually little underwater vegetation, but the fish prefer areas where leaf litter and other organic matter accumulate. The banks of their habitat are often covered with trees and shrubs, which provide shade in the water.
Paracanthocobitis botia lives in a tropical climate with seasonal variations. During the monsoon seasons, their habitat often experiences periods of flooding, which can significantly increase the flow and volume of water.
Diet
In the wild, Paracanthocobitis botia is a micropredator that feeds primarily on insect larvae and other small invertebrates. Studies of the stomach contents of these fish have shown that they primarily eat chironomid (dancing midges) and ephemeroptera (mayflies) larvae.
In the aquarium, Paracanthocobitis botia accepts a variety of foods. You can feed them with small sinking pellets or wafers specifically for bottom dwellers. Daphnia, Artemia (brine shrimp), bloodworms and other small invertebrates are ideal. This is the closest to their natural diet and helps stimulate their natural behavior.
The Aquarium
If you want to keep a group of Paracanthocobitis botia, it is recommended to have an aquarium that is at least 90 cm long (approximately 100-120 liters) to provide adequate space for territorial behavior and to minimize stress.
The aquarium should be decorated with a combination of plants and rocks. Driftwood roots and branches can be used to create shady spots. Plants such as Microsorum, Bolbitis or Anubias spp. can be attached to the decor.
Use a sand or fine gravel substrate, as these fish like to dig. A sandy substrate is ideal because it supports the fish’s natural digging habits and prevents them from injuring themselves. Provide plenty of hiding places with rocks, caves, and other decorative elements. This helps the fish feel safe and reduces stress.
Water parameters
The water temperature can range from 21 to 26 °C. The pH level may vary between 6.0 and 7.0.
Tank mates
Paracanthocobitis botia is a peaceful species that lives well with other peaceful fish. Suitable tankmates include Zebra Danios (Danio rerio), Rosy Barbs (Pethia conchonius), Dwarf Gourami (Trichogaster lalius), and Corydoras species.
Avoid aggressive or territorial fish that may intimidate or injure the loaches. Large bottom dwellers that can be aggressive, such as some Schistura species, should be avoided.
Breeding Paracanthocobitis botia (Mottled Loach) in the aquarium
There is limited documented information regarding the successful breeding of Paracanthocobitis botia in aquariums. Most sources indicate that there are no detailed observations or reports on the breeding behavior of this species in its natural habitat. This suggests that breeding this fish species in captivity may pose challenges.
Video
Author
John de Lange
Copyright images
Emma Turner – Loaches.com
