Photos / Sounds

What

Purple Eelgoby (Taenioides purpurascens)

Observer

derrickcruz

Date

February 1, 2017 11:48 AM AEDT

Photos / Sounds

Date

August 6, 2023 07:22 PM AEST

Photos / Sounds

Observer

dentrock

Date

December 15, 2023 07:09 AM AEDT

Description

I photographed several spawning pairs of Nesogobius sp 1 on 7, 15 and 17 December. I could only find one pair on the 17th, so I guess that was the finish of the N sp 1 season.

Mostly they were laying eggs in small depressions in the sand.

The first pic also shows eggs attached to an empty cockle shell.

The second pic shows one of the females actively covering her eggs. Other females just deposited their eggs in the sand, without apparently trying to cover them up further.

The third pic shows eggs visible in the female's egg tube and on the sand, if you look closely.

The fourth pic shows a male fertilising the eggs.

The last pic shows one of the solitary males displaying, perhaps to warn off other males or attract a female? These guys never seemed to harass the spawning pairs.

Another behaviour one for you Mark?

Next goal is to see if can find and photograph the N pulchellus spawning. These also occur at St Leonards. At the moment, there are very few N pulchellus about, and they are tiny (<20mm).

Photos / Sounds

Observer

dentrock

Date

December 15, 2023

Description

This is a male Nesogobius sp 1 facing off against the goatfish U vlamingii.

What I couldn't show was the Nesogobius actually attacking the goatfish, and eventually driving it off. I have not seen such a small goby attacking a large fish. It reminded me of magpies and peewees driving off an eagle.

There were several spawning pairs of Nesogobius in the vicinity (see next obs) and several solitary males displaying intermittently.

One for your behaviour collection, Mark?

Tags

Photos / Sounds

Observer

justinchans

Date

October 30, 2022 11:33 AM AEDT

Photos / Sounds

Observer

mattytestoni

Date

August 8, 2021 05:49 PM AEST

Place

Australia (Google, OSM)

Photos / Sounds

Observer

kittsw

Date

January 10, 2021 09:08 AM ACDT

Photos / Sounds

Observer

salmoy

Date

July 24, 2020 09:15 AM AEST

Photos / Sounds

What

Cryptic Bearded Goby (Barbuligobius boehlkei)

Observer

jmartincrossley

Date

June 27, 2023 07:19 PM AWST

Photos / Sounds

What

Midgley's Grunter (Pingalla midgleyi)

Observer

nlitjens

Date

November 19, 2014 06:08 PM ACST

Description

A school of Midgley's grunters photographed in natural habitat in the NT, Australia

Photos / Sounds

What

Twospine Blackfish (Gadopsis bispinosa)

Observer

nlitjens

Date

March 30, 2018 11:02 PM AEDT

Description

Twospined river blackfish photographed in habitat in the Kiewa River, Victoria, Australia

Photos / Sounds

What

River Blackfish (Gadopsis marmorata)

Date

December 24, 2022 08:26 PM ACDT

Description

Ewens Ponds night dive
IDing the fish in the middle

Photos / Sounds

Observer

wayneosborn

Date

May 31, 2021 11:41 AM AEST

Description

Circa 1970s film scan.

Tags

Photos / Sounds

What

Chinese Gudgeon (Bostrychus sinensis)

Observer

stephenmahony

Date

March 2020

Photos / Sounds

What

Northern Purple-spotted Gudgeon (Mogurnda mogurnda)

Observer

nigelmarsh

Date

May 20, 2022 10:39 AM ACST

Photos / Sounds

What

Birdsong's Mudskipper (Boleophthalmus birdsongi)

Observer

h_michel

Date

June 2, 2022 07:49 AM AWST

Photos / Sounds

What

Slender Mudskipper (Periophthalmus gracilis)

Observer

coenobita

Date

October 27, 2017 01:51 PM AEST

Description

Periopthalmus gracilis?

Photos / Sounds

What

Flathead Goby (Callogobius depressus)

Observer

glen_whisson

Date

March 4, 2020 02:04 PM AWST

Description

C. mucosus or depressus?

Photos / Sounds

What

Cryptic Bearded Goby (Barbuligobius boehlkei)

Observer

davemmdave

Date

February 10, 2020 01:01 PM ACDT

Description

Very small demersal fish caught by hand net at the Lady Bay Road Reef Watch site at low tide. Pictured in small plastic container full of seawater, above the juvenile sea cucumber,in first photo (See earlier submission).
2nd and remaining photos in the above sequence only show the pink and white belly and ventral surface of the fish, due it's already moribund state (See below),but I include them as they show that the fish has rather frilly margins around the head and mouth, which would aid cryptism when in its natural habitat,perhaps sandy bottomed tide pools rather than ledges etc for which the pale base color would be less suitable.
I think the fish is either a juvenile goby or less likely a type of Clingfish (?juvenile or adult, unsure if so).
Unfortunately it may have been killed by my accidentally including a tiny jellyfish in the container for the brief time spent photographing each critter. Returned to the water in an almost moribund state despite having been kept cool and in shade.

Photos / Sounds

What

Southern Longfin Goby (Favonigobius lateralis)

Observer

davemmdave

Date

January 1, 2012 10:27 PM ACDT

Description

Courtship behaviour ,only 2 adults involved,shallow tide pool with mainly sandy bottom and low rocky edges.
I've considered whether this might be 2 males vying for an unseen female's attention,but I favour courtship between opposite genders,partly because I would've expected to see a nearby female in the clear sunlit shallow calm pool,and partly because there are differences in morphology and markings between the two in the above images.I suspect the one with the most colourful fins and pale blue belly is the male but I don't know that.

[NB: Soon after joining iNat I posted an observation of that one fish with blue belly using 2 photos.Both taken on same snorkel ,date and site identical. Neither photo included a 2nd fish. For that reason I feel this current submission is not a mere duplicate.It includes a 2nd fish(probably Female),and shows behaviour not seen in the original submission.]

Photos / Sounds

What

Cardinal Tetra (Paracheirodon axelrodi)

Observer

johnlenagan

Date

September 17, 2014 05:55 AM AEST

Photos / Sounds

What

Sea Catfishes (Family Ariidae)

Observer

kjadiver

Date

January 25, 2019 09:08 AM AWST