Jerdon’s Baril (Barilius canarensis)

For an active, lively and energetic addition to a home aquarium, look no further than the tireless little torpedo known as Jerdon’s Baril. These streamlined swimmers are truly indefatigable, and if kept in groups will provide endless hours of entertainment as they chase one another… just be sure to have a tightly fitted lid, or you’ll inevitably find this jumpy fish outside of its aquatic home.

Barilius are member of the diverse cyprinid family, home to the many barbs and minnows of the world. The genus has around thirty or so species to its name, found throughout the rivers of Asia. Many of these species are very difficult to tell apart, and, not surprisingly, the true identity of the fish present in the aquarium trade is subject to some debate. While B. canarensis is a name that has been used widely, recent evidence suggests that both B. malabaricus and B. ardens might actually be the species that are most regularly seen. All of these originate from neighboring river drainages in the Western Ghats of India and differ from one another in fairly minor ways.

Coming from habitats that are well-oxygenated and that experience heavy water flow, it is important to provide similarly turbulent and clean conditions in captivity. A strong powerhead directed along the length of an aquarium near the surface can generally achieve this, and you’ll often be rewarded to the sight of your Barilius frolicking against the current. Feed a mix of dry and frozen foods for this carnivore, and feed heavily, as its lively behavior requires a good deal of nutrition.

Barilius are naturally shoaling, but they display an aggressive streak towards their own kind. It is best to keep a half-dozen or more together, but doing so requires a reasonably large aquarium, as this fish grows to nearly five inches in length. Given their boisterous demeanor, tankmates must be chosen with care. Other large, active cypriniforms, such as the Dawkinsia barbs and the Devario danios make for excellent choices, as do most rainbowfishes and many larger tetras, like silver dollars. Many cichlids, catfishes and loaches would also work well, but be sure to avoid timid species, as these will be none too happy about the situation.

Barilius are truly extraordinary fishes, boasting some gorgeous colors and an equally vibrant personality, making these one of the most exciting new groups to join the aquarium trade in recent years.