Betta simorum

Slender, with green iridescence on each dark-brown scale; a relatively large bubble-nesting betta.

Slender, with green iridescence on each dark-brown scale. The head slopes, with a distinct depression behind the eyes, and the pelvic fins are long. A relatively large bubble-nesting betta.

Adult length

Up to 9 cm (standard length, without the tail fin)

Water temperature

25–30 °C

pH

3–6

Hardness

1–5 dGH

Natural habitat

Inhabits densely vegetated peat swamp forest and blackwater streams with dark water over leaves, wood and roots.

A strong jumper that can leap out of the water to feed. Secure the lid and leave a humid air space; watch for the male driving away the female after spawning.