Parkes High School students controlling the Parkes radio telescope and observing pulsars.

Common name: Southern Bluefin Tuna. Scientific name: Thunnus maccoyii. Family: Scombridae.

Southern Bluefin Tuna: The first Southern Bluefin Tuna (SBT) of the 2012 season were towed into Port Lincoln, South Australia today. According to ABC News reports – the 500 tonnes recorded is the best start to the season in decades.

Follow a SBT via Ocean Tracks HERE. CSIRO SBT research HERE.

Max length : 245 cm; common length : 160 cm; max. published weight: 260.0 kg; max. reported age: 20 years.

They live in the Atlantic, Indian and Pacific oceans, mainly between 30°S and 50°S, to nearly 60°S. During spawning, large fish migrate to tropical seas, off the west coast of Australia, up to 10°S. Highly migratory species.

Lower sides and belly silvery white with colourless transverse lines alternating with rows of colourless dots. The first dorsal fin is yellow or bluish; the anal fin and finlets are dusky yellow edged with black; the median caudal keel is yellow in adults.

Spawning fish and larvae are encountered in waters with surface temperatures between 20° and 30°C. An opportunistic feeder, preying on a wide variety of fishes, crustaceans, cephalopods, salps, and other marine animals. Mostly canned.

In Japan it is highly prized for the sashimi markets.


What do you think?

We love hearing from you, but we have a few guidelines.