Family: Osphronemidae
Fire Betta — a Osphronemidae from Southeast Asia, calm labyrinth fish; boisterous tankmates stress it. Reaches 4.5–6.6 cm; singly or in pairs; every gourami wants its corner. 24–28 °C.
Betta rutilans is a Osphronemidae from Southeast Asia. In the wild it prefers still waters, rice paddies and slow streams; in the aquarium it stays calm labyrinth fish. Plan on 4.5–6.6 cm of adult fish at 24–28 °C. Related profiles: Betta imbellis, Betta smaragdina, Betta splendens.
A moderate-level species: calm labyrinth fish; boisterous tankmates stress it; stable water matters more than fancy equipment.
Aim for 24–28 °C. Heater required; stable warmth; 24.0–28.0 °C typical for the genus.
Full size is 4.5–6.6 cm. Minimum tank: 52 L, with open swimming space along its upper; surface-oriented habits.
Surface-feeding omnivore that savours variety. It forages naturally over soft sand with leaf litter, so let some food reach the bottom.
Calm labyrinth fish; boisterous tankmates stress it; singly or in pairs; every gourami wants its corner. Good company: Other calm labyrinth fish — Share the slow lane. Keep away from Fin-nippers like tiger barbs — Torn fins and endless stress.
Comes from Southeast Asia: still waters, rice paddies and slow streams. Expect still to very gentle water and tolerates low oxygen; labyrinth breather.
A confirmed jumper: fit a tight lid and lower the waterline slightly.
Bubble-nest builder; the male tends eggs and fry. Males larger with longer fins.