Royal Clown Loach
Leptobotia pellegrini
China's boldly patterned loach needs a group and robust tankmates to thrive.

About
A mid-sized loach from China, Leptobotia pellegrini sometimes turns up in the trade under the name 'royal clown loach'. A label also used for the closely related and considerably larger L. elongata, which causes no small amount of confusion at the fish store. The two can be told apart by adult size and by L. pellegrini's slimmer build and noticeably darker head. Like all members of the genus, it carries sharp sub-ocular spines that normally lie flat against the face but flare outward when the fish is stressed. Worth knowing before you reach for a net, since they can snag the mesh and will break skin on larger individuals. This species is sociable and forms complex pecking orders within the group, so buying at least three or four together is genuinely important. A single fish often becomes withdrawn or short-tempered, and a small group with one dominant individual can result in the others being bullied off their food. Tankmates should be robust, active cyprinids and similarly sized loaches work well, but skip anything slow-moving or long-finned, and avoid keeping it with fish small enough to be stressed by its size and energetic movement. Newly imported fish occasionally carry a wasting condition linked to internal flagellates, so keep an eye on body condition in the first few weeks.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Royal Clown Loach
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Royal Clown Loach get?
- The Royal Clown Loach reaches about 5–8.5" as an adult.
- What size tank does the Royal Clown Loach need?
- A minimum of 43 gallons is recommended for the Royal Clown Loach, with more room needed for a proper group.
- What water parameters does the Royal Clown Loach need?
- The Royal Clown Loach does best with a temperature of 72–82°F, a pH of 6.5–8, hardness around 2–15 dGH.
- Is the Royal Clown Loach aggressive?
- The Royal Clown Loach is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Royal Clown Loach eat?
- The Royal Clown Loach is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.