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Threadfin Jackfish (Juvenile)

Alecitis ciliaris

Description:

ID by nigel.brennan - thankyou ... :) Body length is about 4cm with a very long 'strands banners'. IT'S NOT A LONG EXPOSURE MOVEMENT TRAIL, they're the dorsal and anal fin. Pectoral fins were round and thick, looked like leaves, Pelvic fins were quite long and splitted. Colour: silver - turquoise - royal blue - metallic light green. Surprisingly, it's a very fast swimmer.

Habitat:

Saltwater

Notes:

Found this 'fantasyland' fish at the surface eating some water bugs in a similar way as a gold fish. It was dark (19:30hrs), could not focus my camera properly.

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11 Comments

Scott Frazier
Scott Frazier 12 years ago

:-) You're welcome

Chicquita
Chicquita 12 years ago

Special thanks to nigel.brennan, S Frazier and Argybee for spending their precious time on this little fish :)
Mystery solved, case closed :)

Mark Ridgway
Mark Ridgway 12 years ago

Well done nigel. In Aus it seems to be called Thread-fin Jack.
http://www.oceanwideimages.com/Large-Ima...

Scott Frazier
Scott Frazier 12 years ago

I've been searching for bizarre fish with modified fins: strands...but no luck...

Chicquita
Chicquita 12 years ago

Elaborate Siamese fighting fish. But in saltwater?

Chicquita
Chicquita 12 years ago

Yep ... Royal Motor Yacht Club berth No. 74 to be precise :) I touched it's fin and whoooz ... it went down in a flash.

Mark Ridgway
Mark Ridgway 12 years ago

Is the map accurate? Pittwater marina? I'm thinking maybe an escaped pet ! :) Otherwise I'm not very knowledgeable about fish. It certainly is a mysterious looking thing. Did it seem healthy and moving well?

Chicquita
Chicquita 12 years ago

Argybee, you've got to help me with this one :) Do you think it's a juvenile one? I went to the same spot at the same time everyday, no luck :(

Mark Ridgway
Mark Ridgway 12 years ago

Fantastic. I have to follow this one. Can you go back with a good light?

Chicquita
Chicquita 12 years ago

S Frazier, I had a good 5 minutes to observe this fish, it's truly amazing. So gracious and sort of glowing in the dark, too!

Scott Frazier
Scott Frazier 12 years ago

Wow. This is a mystery to me. Can't wait to find out!

Chicquita
Spotted by
Chicquita

2106, New South Wales, Australia

Spotted on Feb 16, 2012
Submitted on Feb 22, 2012

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