Bengal Turquoise Danio Care Guide - Tank Setup, Diet & Breeding

The Bengal Turquoise Danio is a lively, streamlined cyprinid with a reflective blue-green or turquoise sheen along the upper body. Its elongated form, forked tail and contrasting dark markings give it the classic active-danio appearance, while the iridescent colour becomes especially noticeable as it moves through the aquarium.

Bengal Turquoise Danios are native to South Asia, including northern India, Bangladesh, Nepal and parts of Pakistan. They occur in streams, rivers and associated waters across the Himalayan foothills and the Ganges-Brahmaputra drainage region.

A group should be kept in an aquarium of at least 75 litres, with a footprint around 90 cm long by 30 cm wide to provide room for continuous swimming. Use an efficient filter with good oxygenation and moderate current, leaving an open central area while adding hardy plants, smooth wood or rocks around the edges for cover. A dark, fine-grained substrate can enhance their colours, and a secure lid is important because active danios may jump.

Up to around 9 cm (3.5 in) in total length. Females are usually more robust and may reach the upper end of this range, while males are commonly slimmer and around 7–8 cm (2.8–3.1 in).

In nature, Bengal Turquoise Danios eat small aquatic invertebrates, insects and other tiny organisms taken from the water column and surface. Offer a varied diet of quality small pellets or flakes supplemented with live or frozen foods such as daphnia, mosquito larvae, brine shrimp and cyclops. Small portions fed regularly help accommodate their active metabolism without leaving excess food in the aquarium.

Bengal Turquoise Danios are generally peaceful but energetic community fish. Suitable companions include other robust danios, medium-sized rasboras, peaceful barbs, larger tetras, rainbowfish and bottom-dwellers such as Corydoras and small peaceful loaches. Avoid very slow, timid or long-finned fish that may be disturbed by their constant activity, as well as predatory species large enough to swallow them.

Bengal Turquoise Danios are egg-scattering spawners that can breed readily in mature, well-conditioned groups. Feed the adults plenty of live or frozen foods, then place a pair or small group in a separate breeding aquarium with clean, gently moving water and a spawning mop or fine-leaved plants. Spawning usually occurs among the vegetation, after which the adults should be removed because they may eat the eggs. The eggs hatch in roughly 2–3 days, and the tiny fry can be raised on infusoria or other suitably fine first foods before moving on to newly hatched brine shrimp.

Females are typically deeper-bodied, especially when carrying eggs, and tend to be slightly larger. Males are generally slimmer and may show stronger colour contrast, particularly when displaying or in breeding condition.