The Chili Rasbora, scientifically known as *Boraras brigittae*, is a captivating and vibrant addition to the freshwater aquarium hobby. This diminutive species, often not exceeding 0.8 inches (2 cm) in length, is cherished for its fiery red coloration and peaceful demeanor, making it a favorite among aquarists seeking to add a splash of color to their nano tanks. Originating from the densely vegetated and acidic waters of Indonesia, specifically in Borneo, the Chili Rasbora thrives in environments that mimic these blackwater conditions. Let’s delve into the world of Chili Rasboras, exploring their lifestyle, care requirements, and how to create a harmonious aquarium setup for these tiny jewels.

Chili Rasboras boast a striking red body that is accentuated by a black lateral line running from head to tail, making them stand out in any aquarium. Despite their small size, they are active swimmers and enjoy being in groups, exhibiting fascinating schooling behavior. Their natural habitat consists of slow-moving streams and peat swamps where the water is soft, acidic, and teeming with organic matter, providing both food and protection.

To ensure your Chili Rasboras flourish, consider the following setup and care guidelines:
- Tank Size: A minimum of 5 gallons for a small school, though larger is better to accommodate their schooling behavior.
- Water Parameters: Soft and acidic water (pH 4.0-6.5) with temperatures ranging from 68-79°F (20-26°C).
- Tank Setup: Simulate a blackwater environment with tannin-rich water, using driftwood, leaf litter, and dim lighting. Plant densely with species like Java Fern and Anubias to provide hiding spots and mimic natural cover.
- Diet: Small, fine foods like micro pellets, daphnia, or brine shrimp to accommodate their tiny mouths.
- Grouping: Keep in schools of at least 6-10 individuals to promote natural behavior and reduce stress.

Given their peaceful nature and small size, Chili Rasboras do best with similarly sized and tempered tank mates. Here are some ideal companions:

- Pygmy Corydoras (*Corydoras pygmaeus*): Peaceful bottom dwellers that thrive in similar water conditions.
- Neon Tetra (*Paracheirodon innesi*): Another small, peaceful fish that enjoys soft, acidic water.
- Otocinclus Catfish (*Otocinclus spp.*): Gentle algae eaters that won’t compete aggressively for food.
- Harlequin Rasbora (*Trigonostigma heteromorpha*): A slightly larger, but still peaceful species that can complement the Chili Rasbora’s color.
- Dwarf Gourami (*Trichogaster lalius*): Their calm demeanor makes them a suitable match, provided the tank is spacious enough.

- Cherry Shrimp (*Neocaridina davidi*): Their small size and peaceful nature make them great tank mates.
- Amano Shrimp (*Caridina multidentata*): Excellent algae eaters that coexist well with small fish.
- Dwarf Crayfish (*Cambarellus patzcuarensis*): While generally peaceful, ensure they have enough space and hiding spots.
- Snails (Various Species): Such as Nerite and Mystery snails, which are beneficial for algae control and won’t bother the fish.

In a well-established aquarium, small aquatic bugs and microorganisms will naturally occur and provide additional food sources for Chili Rasboras.

- Java Moss (*Taxiphyllum barbieri*): Offers excellent cover and breeding ground.
- Cryptocoryne (*Cryptocoryne spp.*): Adds to the naturalistic setting and thrives in low light.
- Bucephalandra (*Bucephalandra spp.*): A hardy plant that does well in the same water parameters.
- Moss Balls (*Aegagropila linnaei*): Provide aesthetic appeal and some filtration benefits.
- Water Sprite (*Ceratopteris thalictroides*): A fast-growing plant that can provide shade and hiding places.

Small, non-aggressive amphibians like Dwarf Frogs can coexist with Chili Rasboras, but their care requirements must be carefully considered to ensure compatibility.

The Chili Rasbora is a testament to the beauty and complexity that can come in small packages. These vibrant red gems offer a unique opportunity to create a slice of Borneo’s peat swamps in the home aquarium, bringing with them a peaceful demeanor and fascinating schooling behavior. By prioritizing the replication of their natural habitat—soft, acidic water, dense vegetation, and appropriate tank mates—aquarists can ensure these tiny fish not only survive but thrive.

Their care, while specific in terms of water chemistry and tank setup, is straightforward once the proper conditions are established. The Chili Rasbora's ability to coexist with a variety of similarly sized and tempered species allows for the creation of a vibrant and dynamic community tank that is as peaceful as it is beautiful. Whether you’re a seasoned aquarist or just starting out, the Chili Rasbora is a delightful species that can bring a touch of the exotic to any freshwater aquarium, proving that great things indeed come in small packages.