Twospine Blackfish

Gadopsis bispinosus
Twospine Blackfish - Marinewise © 2023 MarineWise

Quick Facts

Scientific name Gadopsis bispinosus
Other names Two Spined Blackfish
Size Up to 30 cm (11.8 in)
Weight Under .50 kg (1.10 lb)


Habitat & AU Distribution Freshwater mountain streams & creeks over rocky areas & near boulders
Depth Range 0 - 3 m (12 ft)
Twospine Blackfish Distribution

Interesting Info

  • The Twospine Blackfish is a freshwater fish species found only in Australia. The fish is native to the eastern coast of Australia, commonly found in the Snowy River in New South Wales.
  • They are typically found in clear, cool water with rocky bottoms and are most commonly found in areas with fast-flowing water.
  • They have a distinctive appearance, with a slender body, pointed head, and two spines on their back. The fish is generally olive green or brown in colour, with a lighter underbelly.
  • The Twospine Blackfish feeds on a variety of small aquatic invertebrates, including insects and crustaceans. They are known to be particularly active at night when they move from their hiding places to feed.
  • They are a relatively slow-growing species, with females taking up to four years to reach maturity.
  • Estimates on lifespan are around 5-7 years in the wild but have been known to live up to 10 years or more.
Species Interaction

Recreational Fishing

Twospine Blackfish are a popular target for recreational anglers in Australia due to their small size, sporting qualities, and the challenge they present in catching them. They are also a species that can be caught using a variety of fishing techniques, including fly fishing and bait fishing.

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Perciformes

Family: Percichthyidae

Genus: Gadopsis

Species: Gadopsis bispinosus

Conservation Status

In Australia, the Twospine Blackfish is not currently listed as a threatened species under the Commonwealth’s Environment Protection and Biodiversity Conservation Act 1999, but it is listed as a threatened species in Victoria, where it is considered vulnerable to extinction. They are also considered to be a species of conservation significance in the ACT and is protected under the Nature Conservation Act 2014. The species is listed as vulnerable to extinction in the ACT, which means that it is at risk of becoming endangered in the near future.

Fish Taste Quality

Twospine blackfish is not considered to be a good table fish due to its small size, it is also listed as a threatened species and should not be consumed.

Taste Rating: no rating

How to catch
Twospine Blackfish

Catch Difficulty: Difficult

Tackle: Running Sinker Rig, Artificial Rig

Bait: Lures, Worms, Insects, Flies

Technique: Slowly sink bait towards bottom, Cast lures with a slow retrieve

Popularity: Popular

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