Fauna
Fish

Northern Barramundi

Lates calcarifer

Also known as Asian Sea Bass, Giant Sea Perch, Asian Sea Lates

Northern barramundi are formidable catadromous predators that migrate from freshwater rivers down to coastal estuaries to spawn during the rainy season. Young fish are protandrous hermaphrodites, maturing first as males before transforming into large breeding females after several years. Their silvery bodies, concave heads, and pinkish reflective eyes make them unmistakable residents of mangrove snags and tidal creeks.

CatadromousPredatoryGame Fish
Northern Barramundi reference1 / 2
(c) Mitch Ames, some rights reserved (CC BY-SA) · cc-by-sa
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preySmall Fish, Prawns, Crabs
Predators
  • Saltwater Crocodile
  • Bull Shark
  • Osprey
ThreatsOverfishing, dam construction, habitat degradation
HabitatsRivers, estuaries, mangroves, coastal reefs
Life span15–20 years
Classification
  1. OrderPerciformes
  2. FamilyLatidae
  3. GenusLates
  4. SpeciesLates calcarifer
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Razor-sharp gill covers and fin spines can cause deep cuts; handle carefully when landing.
Why it is dangerous
Possesses razor-sharp preoperculum gill plates and rigid fin spines capable of inflicting deep lacerations.
How to recognize a risky encounter
Look for a silver-grey torpedo-shaped body, large bucket mouth, and concave head profile.
What to do
Use a specialized lip-gripping tool and avoid grabbing near the head or gill covers.
Responsible observation
  • Handling: Use a fish grip tool and landing net, keeping hands clear of the sharp gill plates.
  • Angling: Employ abrasion-resistant leaders to prevent their sharp gill covers from slicing lines.
  • Observation: Look for them lurking around submerged logs, rock bars, and mangrove roots at high tide.
Related species
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