The Tinfoil Barb (Barbonymus schwanenfeldii) is a large, fast-swimming freshwater fish known for its shimmering, metallic scales and active nature. Native to rivers and freshwater bodies across Southeast Asia, including Thailand, Malaysia, and Indonesia, this species is popular among aquarists who have spacious tanks or large community setups.
Tinfoil Barbs have a silvery, reflective body with a slight golden hue, which gives them their "tinfoil" name. Their fins are vibrant, often displaying a combination of red, orange, and black, particularly on the tail and dorsal fin. Some variants, like the Albino Tinfoil Barb, have a pale golden body with red fins. These fish grow quite large, reaching up to 14 inches (35 cm) in length, making them unsuitable for small aquariums.
Highly active and social, Tinfoil Barbs should be kept in groups of at least 5 or more to prevent stress and encourage natural schooling behavior. Due to their large adult size and constant movement, they require a minimum tank size of 125 gallons or more. They coexist well with other large, peaceful fish but may outcompete smaller, slower species for food.
Tinfoil Barbs thrive in water temperatures between 72–78°F (22–26°C) with a pH range of 6.5–7.5 and moderate water hardness. They are omnivores and need a varied diet that includes high-quality pellets, flakes, fresh vegetables (such as spinach and zucchini), and occasional protein sources like bloodworms or brine shrimp.
While their stunning appearance and lively behavior make them an attractive choice, Tinfoil Barbs are best suited for large, well-maintained aquariums with strong filtration and plenty of swimming space. They are not ideal for beginners due to their rapid growth and tank size requirements. However, for experienced aquarists with a spacious setup, these barbs can be a spectacular and engaging addition to a freshwater community.
