Edith’s Betta Care Guide - Aquarium Setup, Diet & Breeding

Edith’s Betta is a relatively small, subtly coloured wild betta with an elongated body, rounded fins and a characteristic dark stripe through the eye and along the body. Depending on mood and locality, the body may show brown, olive or reddish tones, with iridescent blue or green highlights appearing on the fins and flanks. Breeding males often display stronger colour and more pronounced fin markings than females.

Unlike the familiar Siamese fighting fish, this species is a mouthbrooder rather than a bubble-nest builder. Males carry the eggs in their mouths after spawning, making their reproductive behaviour particularly interesting to observe. They are generally less flamboyant than many ornamental bettas, but their calm, watchful manner and wild appearance appeal to aquarists who enjoy natural species.

In the aquarium, Edith’s Betta is usually secretive at first and becomes more confident when provided with cover. It spends much of its time exploring the lower and middle areas of the aquarium, occasionally rising to the surface to breathe atmospheric air with its labyrinth organ. Males may posture and defend small territories, especially around preferred shelters.

In nature, these bettas inhabit dim, warm rainforest waters with little current, leaf litter and submerged roots. Their environment is often soft and acidic, with dissolved tannins giving the water a tea-coloured appearance. Habitat loss and collection pressure make responsibly sourced captive-bred fish an important choice where available.

Betta edithae is native to Indonesia, particularly the island of Borneo in Kalimantan. It occurs in slow-moving, tannin-stained forest waters, including peat swamps, blackwater streams and quiet pools associated with dense tropical vegetation.

A pair or small group should have at least 40 litres, with a larger aquarium preferable for mixed-sex groups or community keeping. A footprint of approximately 60 × 30 cm provides useful territory and is more important than great height. Use a secure lid because bettas can jump, gentle filtration and subdued lighting. Dark sand or fine gravel, leaf litter, driftwood, roots, caves and dense plants such as Java fern, Cryptocoryne, Java moss and floating plants create the shaded, sheltered character of a natural blackwater habitat. Indian almond leaves or other aquarium-safe botanicals can add cover and tannins.

Males reach about 6 cm (2.4 inches) in total length, while females usually remain smaller at around 5 cm (2.0 inches).

This species is primarily a small carnivore and does best on a varied diet of high-quality betta or micropellet foods supplemented with frozen or live offerings. Bloodworms, daphnia, mosquito larvae, brine shrimp and other appropriately sized aquatic invertebrates are suitable choices. Feed small portions and remove uneaten food, as Edith’s Bettas have modest stomachs and can become overweight when overfed.

Edith’s Betta can live with peaceful, similarly sized community fish that prefer warm, soft water, such as small rasboras, peaceful tetras, kuhli loaches and small Corydoras. Avoid fin-nipping species, boisterous tankmates and other territorial anabantoids. Males should not be housed together, and keeping multiple males with females requires a spacious, heavily furnished aquarium with plenty of escape routes.

Edith’s Betta is a paternal mouthbrooder. After an elaborate courtship, the pair spawn beneath a sheltered surface or among plants, and the male gathers the fertilised eggs into his mouth. He incubates them for roughly 10 to 14 days, depending on temperature, before releasing fully formed fry. The male should be left undisturbed during incubation, while the young can be offered very small live foods such as newly hatched brine shrimp and microworms.

Males are generally larger and more vividly marked, with longer, fuller fins and stronger iridescent colour when displaying. Females are shorter-bodied with smaller fins and a rounder abdomen, particularly when carrying eggs.