The Phoenix Rasbora (Boraras merah) is an exceptionally striking, miniature freshwater fish prized for its fiery red coloration and peaceful disposition. Growing to a maximum size of under an inch, it is an ideal centerpiece species for nano aquariums, heavily planted setups, and specialized blackwater communities.

Note for Beginner Aquarists: While peaceful and manageable in size, Boraras merah is a delicate micro-species requiring stable water parameters and soft, acidic conditions. Because they are sometimes grouped or compared alongside active community fish like guppies, beginners should note that Boraras merah prefers calm, relaxed environments and should be kept in dedicated schools rather than aggressive or boisterous community tanks.

Short Description & Highlights

Boraras merah features a brilliant red-orange body accented by a unique dark lateral pattern and shimmering highlights. These micro-fish thrive in schools and display their best behavior and coloration when housed in groups of eight or more. Beginners will find them to be peaceful neighbors that do not disturb plants or substrate, though they require a mature, well-maintained aquarium to truly flourish.

Key Product Highlights:

Detailed Beginner Care Guide

1. Aquarium Setup & Tank Mates

Because of their microscopic scale, a single school can comfortably inhabit nano tanks starting at 5 to 10 gallons. They excel in heavily planted layouts featuring driftwood, botanicals, and dark substrates that mimic their native peat-swamp habitats. Avoid housing them with boisterous or fast-eating fish (such as active male guppies) that may outcompete them during feeding time or cause them chronic stress. They are best paired with dwarf shrimp, nerite snails, or other tiny, calm rasboras.

2. Feeding & Nutrition

Due to their tiny mouths, Boraras merah cannot consume standard, large commercial fish foods. They require finely crushed micro-pellets, high-quality powdered fry foods, cyclops, and freshly hatched baby brine shrimp. Providing a varied diet rich in protein will enhance their striking red pigmentation.

3. Water Stability & Maintenance

Phoenix Rasboras are sensitive to sudden chemical fluctuations and high nitrate levels. Beginners must ensure the aquarium is fully cycled and mature before introduction. Performing small, regular weekly water changes using soft or RO (reverse osmosis) water adjusted with botanical tannins will keep these micro-fish healthy, active, and vibrant.