Interactions Between Common Weedfish, Heteroclinus perspicillatus, and Rockpool Shrimp, Palaemon serenus

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In 2011, this Common Weedfish, Heteroclinus perspicillatus, was stalking a Rockpool shrimp, Palaemon serenus, which it later consumed. (As posted at https://inaturalist.ala.org.au/observations/10002537#activity_comment_948643c9-28f5-4479-b730-e7f9dd2e9a28 ) Both these weedfishes and shrimps are very common in these particular tide pools and channels at Haycock Point, Carrickalinga. The weedfishes and shrimps often appear at peace […]

Update of the Flora and Fauna of Piccaninnie Ponds and Ewens Ponds (Including Eight Mile Creek)

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(This article is a re-write of one published in our 2006 Journal, because it was only one of the early drafts that was published in error and some of the intended information was missing. I attempted to rectify the error by having Part 2 published in our 2007 Journal. Now, […]

Fish Species Recorded from Sydney Harbour

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According to an article on the Australian Museum blog, The fish list: A decade in the making by Dr Joseph DiBattista,  Curator, Ichthyology, Australian Museum, “the number of fish species recorded from Sydney Harbour now stands at 675 (Based on independent data sources)”. (The Staff Profile for Dr Joseph DiBattista […]

Recreational Fishing’s Possible Impact On Wrasses That Have Historically Helped To Limit Sea Urchin Densities

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Canopy algae are a major component of Blue Carbon fixation. Whilst diving at The Bluff (Rosetta Head) on 27th October 2022, I found this Western Pacific Purple Sea Urchin, Heliocidaris erythrogramma: – I have posted it on iNaturalist, along with the following details, at https://inaturalist.ala.org.au/observations/140727962 . Overall, I saw relatively […]

How Free-swimming Temperate Pelagic Fish Approach a Cleaning Station

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David Muirhead recently posted this photo of a bluethroat wrasse, Notolabrus tetricus from old Rapid Bay jetty on 1st October 2022 on iNaturalist at https://inaturalist.ala.org.au/observations/139393179 : – David gave the posting the following description (but with my punctuation, or the computer’s): – “SUBJECT is the wrasse parked vertically near the […]