Barramundi
Lates calcarifer
Also known asPalmer
Water parameters
Minimum tank: 500 L per individual at harvest size.
Feed and growth
- Feed protein
- 45% target
- Daily feed (warm)
- 1.30% of body weight
- Daily feed (cool)
- 0.50% of body weight
- Max density
- 35 g per litre
A 1500 g adult eats about 19.5 g of feed per day at optimum. 10 fish at adult size: ~195 g daily.
Legality
Rules vary by jurisdiction and change over time. Verify with your local fisheries or wildlife authority before stocking.
| Jurisdiction | Status | Notes |
|---|---|---|
| New South Wales | permit required | Aquaculture permit required outside native range verified 2026-05-13 |
| Queensland | legal | Native species in Queensland verified 2026-05-13 |
Unlisted jurisdictions default to "check local regulations".
Origin and habitat
Native to coastal rivers and estuaries across northern Australia, Southeast Asia, the Indian subcontinent, and Papua New Guinea. The species (Lates calcarifer) is catadromous in the wild: populations spend most of their lives in freshwater rivers and floodplains but migrate to saltwater estuaries and coastal areas to spawn. For aquaculture and aquaponics, freshwater-only culture works fine throughout the entire growth cycle; the fish doesn't need saltwater access. Barramundi is a premium food fish with white, firm, mild-flavored flesh that commands high prices in the Australian market (where it's a flagship native species) and increasingly in North American and European specialty seafood markets. Adults are fast-growing predators that reach 2–5 kg in culture conditions within 18-24 months. The species is sequential hermaphrodite: all fish start as males and transform to females at around 3-5 years of age.
Climate and outdoor ponds
- Climate
- tropical (needs warm water year-round)
- USDA zones
- 11–13 (winter low around 4°C or warmer)
- Heating needed
- yes
- Cooling needed
- no
Care notes
A premium warm-water aquaponics species for systems that can maintain 26–30°C year-round. Growth is fast under optimal conditions: 400–800 g in 12-18 months on high-protein feed (42-48% pellet). FCR is excellent at 1.3-1.7, competitive with the best tilapia operations. The temperature requirement is the main challenge: barramundi stop eating below 20°C and die below 15°C. In temperate climates, this means heated greenhouses or insulated indoor systems with significant energy costs that must be factored into any economic analysis. Stocking density can be high (20-40 g/L) because barramundi tolerate crowding well, provided oxygenation is adequate (dissolved oxygen above 4 mg/L). They're aggressive feeders that train easily to floating pellet feed. Cannibalism is a serious management issue: larger fish eat smaller ones aggressively. Grade fish by size every 2-4 weeks and separate size classes. Fingerlings are available from specialist hatcheries in Australia, the US (mainly Florida and Massachusetts), and Southeast Asia. Legal to culture in most jurisdictions as a non-native tropical species; escape risk in temperate climates is negligible because the fish can't survive cold winters. The retail market price ($18-30/kg) makes barramundi one of the most economically attractive aquaponics species if you can manage the heating costs and find a local buyer.