Glen:

Could you please upload the image again? I cannot open it right now.

- Ron

Hi Ron, I've attached the image again here, thanks for your help, cheers Glen

Glen:

Thanks. This is certainly no stripey. To me it looks like a juvenile carangid, possibly Seriola hippos Günther 1876.

- Ron

Hi Glen

I do agree with Ron's ID for S. hippos. Anyway I'm positive that this is not a stripey.

Cheers,

JP

Thanks Ronald and Joao

I doubt it's S. hippos - attached is a pic I took of a 50mm S. hippos - the bump on the forehead is characteristic.

Any other ideas for me to chase up?

regards

Glen

Well, smaller specimens of C. hippos don't have a bump but a barred pattern (dark bars on yellow ground). They change their colour pattern significantly during development. I am not sure whether your specimen represents C. hippos, though.

Gnathanodon speciosus is also yellow with a barred pattern; usually, they have more bars, but very young specimens have five bars only. However, the eye should be barred as well, which is not the case in your specimen.

Young Caranx sexfasciatus are also yellow with black bars, but they should have a total of 6 parallel bars.

There are plenty of carangids reported from WA, and among those several with unknown juvenile stages, so your specimen might belong to one of those.

Thanks Ron - much appreciated

Glen

Hi Glen

I would drop Glenn Moore or Mark Allen at the museum a line. I'm sure one of them will be able to help. Great pics as always Glen.

Cheers

Dave

Hi Dave

Thanks for your input. Yes I've run this one past Glenn before but we haven't come to a conclusion. He is reviewing all of our IDs for the book - can't wait to get it out now... ready for the next project!

cheers

Glen

Way ahead of me! Thanks Glen. I agree though - I doubt its S. hippos with that head shape. Plus, although the visible rear part of the dorsal fin appears to be similar to some carangids, the caudal fin is not deeply forked like carangids (unless there's an early developmental phase, but I don't think so).

Cheers

Dave

This has been confirmed as a juvenile Tilodon sexfasciatus