Viewing: Bony fishes

Jun 12

June 12, 2016

The naming of the Bluefin Leatherjacket, Thamnaconus degeni

David Muirhead took this photo of a male Bluefin Leatherjacket, Thamnaconus degeni, at the Noarlunga Tyre Reef: – Photo of a male Bluefin Leatherjacket, Thamnaconus degeni (Taken by David Muirhead at the Noarlunga Tyre Reef) The leatherjacket was named by a Mr C Tate Regan in 1902 (or 1903). He named it Pseudomonacanthus degeni at the time. It later became Thamnaconus degeni CAAB Code:37465037). So Thamnaconus degeni is now the accepted  name for the species, whilst Pseudomonacanthus degeni is a…

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May 11

May 11, 2016

ANZAC Day dive at Carrickalinga

When David Muirhead suggested that we dive at Carrickalinga for our Anzac Day dive (25th April), I happily agreed, since I hadn’t dived there recently, or very much at all for that matter. It seems that no one else was able to join us that day, so it was just the two of us that met at the car park there on the seafront. We simply had to gear up in the car park and walk down a ramp onto…

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Mar 2

March 2, 2016

A discovery by researchers from Flinders University enables the removal of mercury from water & soil

ABC TV’s “Catalyst” program recently discussed mercury levels in fish. They reported that fish are a healthy source of protein and omega-3 fatty acids, but high mercury levels in fish can be a problem. At very high concentrations, mercury has a profound toxic effect on human beings. It is hoped that a new invention can help with the mercury problem. One of the most toxic forms of mercury is methylmercury. It consists of one mercury atom bonded to one carbon…

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Feb 29

February 29, 2016

Sea Snake Sightings or Worm Eels?

Wendy White, the Coordinator for the Normanville Natural Resource Centre, recently sent the following email enquiry to David Muirhead regarding a suspected sea snake sighting (try saying that last bit quickly): – “Hi David, a local resident came into the centre today asking about a ‘snake’ that she found on the beach at Normanville South. She found it being washed up, it was about 30 cm long and a bit thicker than her finger with a yellow head and a…

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Feb 11

February 11, 2016

More photos of a male Senator Fish rubbing its body in the substrate

Since writing my article titled Unusual Behaviour by Senator Fish, Pictilabrus laticlavius, I have observed similar Senator Fish behaviour at Rapid Bay jetty. In March 2015, I had witnessed some unusual behaviour by Senator Fish at Rapid Bay jetty. The unusual behaviour that I witnessed by them was that many of them were often rubbing their bodies in the substrate. (There seemed to be more male Senator Fish than usual swimming around. They weren’t swimming in schools or large groups,…

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Feb 3

February 3, 2016

Pipefish Photos from our Port Hughes Dive

As reported in the article titled “Our ‘Pipefish’ Dive at Port Hughes”, we held a dive at the Port Hughes jetty on 2nd January 2016. The divers on the day consisted of Peter Gower, Chris Hall, Kevin Smith & I. A friend of Chris, and Kevin’s mother, were also there with us. Kevin Smith reported seeing hundreds of juvenile Southern Gulf Pipefish, Stigmatopora narinosa, much less of Spotted pipefish, Stigmatopora argus, three small schools of Brushtail pipefish, Leptoichthys fistularis and a…

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Sep 5

September 5, 2015

The work of Edgar Waite (& his Rainbow Cale painting)

According to Wikipedia, “Heteroscarus acroptilus, the Rainbow Cale, is a species of weed whiting endemic to Australia where it is found in marine waters along the southern coast. It inhabits rocky reefs that have plentiful growth of brown algae and also in beds of seagrass, particularly those of the genus Posidonia. It occurs at depths of from 1 to 15 metres (3.3 to 49.2 ft). This species grows to a length of 24 centimetres (9.4 in). It can also be found in the aquarium trade. This species is…

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Aug 27

August 27, 2015

South Australia’s four native Blue Devil species

David Muirhead says that South Australia actually has four native blue devil species! He says that these are: – #1:Paraplesiops meleagris : Southern Blue Devil #2:Paraplesiops alisonae : Alison’s Blue Devil #3:Eryngium rostratum : Blue devil #4:Eryngium vesiculosum : Prostrate Blue devil (aka Prickfoot) David adds, “Actually SA has 5-6 native species of blue devil, but I’ve not listed Eryngium plantagineum (Long eryngium) and Eryngium supinum (Little devil) as both occur in SA only in the Lake Eyre basin, with…

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Aug 23

August 23, 2015

The wonderful and diverse syngnathids of Normanville, South Australia

I am a research associate at the California Academy of Sciences where I study the evolutionary relationships among seahorse, seadragons, and pipefish in the family Syngnathidae. I employ DNA sequencing, morphological characters, and underwater photography to gain a better understanding of these relationships which are largely unresolved in this family, and therefore is in need of a major revision which will help in the management and conservation of these fishes. Australia, and in particular Southern Australia, is a major hotspot…

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Aug 7

August 7, 2015

Southern Bluefin Tuna (Carl Charter)

Dan Monceaux’s submission in response to Oceanic Victor proposal

DISCLAIMER: The views expressed below are the personal views of the author. To PIRSA Aquaculture, Please find attached my submission in response to Oceanic Victor‘s pilot lease application to establish a sea cage aquaculture tourism operation near Granite Island in Encounter Bay, South Australia. I am linking a number of additional files to support the presence of protected species in the vicinity of the project site. PUBLIC SKEPTICISM Members of the public have expressed concern that given the common business interests of…

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