Betta Simorum Unsexed Wild 5cm

The Betta Simorum (Betta simorum) is a large and impressive wild Betta from the blackwater peat swamps and slow-moving rivers of Sumatra and the Riau Archipelago, Indonesia. A paternal mouthbrooder, it displays a striking combination of dark olive-brown body colouration with vivid iridescent blue-green scaling on the fins and flanks — a bold and handsome fish that commands attention in a species aquarium. One of the larger wild Betta species, it is best appreciated by experienced keepers who can provide the specialised conditions it requires.

Care Guide

• Tank Size: Minimum 80L per pair; species-only setup strongly recommended
• Water Parameters: pH 4.0–6.0 | Temp 24–28°C | Soft, acidic blackwater; Indian almond leaves and peat filtration essential
• Diet: Carnivorous — live or frozen bloodworm, earthworms, daphnia, and brine shrimp; can be trained to accept quality pellets
• Temperament: Males territorial; best kept as a pair in a species-only setup
• Tank Setup: Heavily planted with leaf litter, driftwood, and dim lighting; replicates their natural blackwater peat swamp habitat
• Skill Level: Advanced
• Max Size: 10cm