Master Breeder List
Explore the OSAquatics Master Breeder List — a verified directory of advanced breeding methods, focused on genetics, welfare, and ethical captive‑bred lines. Updated regularly.
EW
Extinct in the Wild
Breeding snapshot
- Group‑spawning, substrate‑selective egg‑scatterer.
- Condition 3–4 weeks on high‑protein live/frozen foods.
- Trigger: cool, soft water change + increased flow.
- Eggs hatch in 36–48 hours; fry free‑swimming day 4–5.
CR
Critically Endangered
Species facing an extremely high risk of extinction in the wild. Captive breeding is essential to preserve remaining genetic diversity.
Breeding snapshot
- Open/substrate egg‑scatterer; no parental care.
- Spawns in groups; adults must be removed post‑spawn.
- Eggs hatch in 24–36 hours; fry free‑swimming by day 3–4.
- First foods: infusoria → Artemia nauplii.
Breeding snapshot
- Cave‑spawning bubble‑nest variant; male guards eggs.
- Requires pH 3.5–5.0, conductivity < 40 µS/cm.
- Eggs hatch in 36–48 hours; fry free‑swimming day 5–6.
- Fry extremely small: paramecium essential.
Breeding snapshot
- Peat swamp specialist; extremely soft, acidic water.
- Cave‑spawner; male guards eggs and early fry.
- Fry require microscopic foods and ultra‑clean water.
Breeding snapshot
- Paternal mouthbrooder; male incubates 18–24 days.
- Soft, clean water with gentle flow required.
- Released fry are large and take Artemia immediately.
Breeding snapshot
- Small paternal mouthbrooder; tiny clutches.
- Requires pH < 4.5, extremely soft water.
- Fry very small: paramecium essential.
Breeding snapshot
- Bubble‑nesting or cave‑associated nests.
- Blackwater specialist: pH 3.5–5.0.
- Fry extremely small; paramecium → Artemia.
Breeding snapshot
- Paternal mouthbrooder; soft, acidic water.
- Fry robust; Artemia from release.
Betta mandor — Breeding & Rearing
Full breeding & rearing profile → →Breeding snapshot
- Cave‑spawner; male guards eggs.
- Requires extremely soft, acidic water.
- Fry microscopic; paramecium essential.
Breeding snapshot
- Peat swamp specialist; pH < 5.
- Cave‑spawner; male parental care.
- Fry extremely sensitive to water quality.
Breeding snapshot
- Females carry egg clusters before attaching them to plants.
- Eggs hatch in 10–14 days.
- Fry large; Artemia from day 1.
VU
Vulnerable
Species facing a high risk of extinction in the wild. Many are common in the trade but declining in nature.
Breeding snapshot
- Very difficult to breed naturally; farms use hormone induction.
- Requires large groups, warm soft water, and strong flow.
- Eggs extremely sensitive; larvae require immaculate water.
- Slow maturation makes wild recovery difficult.
NT
Near Threatened
Species that are not yet endangered but are declining due to habitat loss, pollution, or over‑collection.
Breeding snapshot
- Egg‑scatterer; prefers underside of broad leaves.
- Requires soft acidic water (pH 5.0–6.0).
- Eggs hatch in 24–36 hours; fry free‑swimming day 3.
- First foods: infusoria → microfoods → Artemia.
