Betta Rutilans
📖 Overview
Betta Rutilans (Betta rutilans), first described by Witte & Kottelat, 1991 is a tiny fish in the family Osphronemidae (order Anabantiformes). Adults typically reach 3.50 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Critically Endangered.The species is a species of conservation concern.
🔬 Taxonomy
🐟 Physical Description
Belongs to the Betta coccina complex which is distinguished by having only 9 abdominal vertebrae (vs. 10-11 in all other Betta) and usually a deep red color. Within this complex, Betta persephone is distinguished by its blackish coloration. Betta rutilans shares with Betta tussyae, a modal dorsal ray count of 12 (vs. 10 and 11 in other species of the complex), a modal subdorsal scale count of 9 (vs. 7), a greater length of dorsal base (20-23% SL, vs. 14-19), absence of a midlateral blotch (vs. usually present in male Betta coccina and Betta sp. Witte & Schmidt, submitted) and white pelvic filament (vs. black in Betta coccina). Betta rutilans differs from Betta tussyae by a lower mode in dorsal (I, vs. II) and anal spines (II, vs. III), smaller size (up to 25 mm SL, vs. 48, aquarium specimens), and absence of bluish green spots on proximal areas of unpaired fins (vs. usually present). The single cleared and stained specimens is apparently distinguished from all other Betta by having fused hypurals 6 and 7 .: fusiform / normal.
🌀 Behaviour
Behavioural data for Betta Rutilans is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical; 22°C - 26°C
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Betta Rutilans.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .
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