Threadfin Jack juvenile

A juvenile threadfin jack in the waters off Hawaii
A juvenile threadfin jack in the waters off Hawaii

This month’s Becky’s Squares challenge theme is ‘Odd.’ (See more responses here.) I have resisted the temptation to post 28 selfies, which will be a relief to everyone, including me. Instead, I start with a favorite fish of mine, the odd-looking Threadfin Jack juvenile.

The key word here is ‘juvenile,’ because when Threadfin Jacks mature, they end up looking like creatures that could provide security at a Beyoncé concert. But as juveniles, they sport a little diamond body, silvery with black bars, and an extravagant array of trailing filaments. This appearance is intended to mimic jellyfish, which was my assumption when I first saw one.

I used to see these regularly, but in the last couple of years I’ve only seen one pair, and that only for a fleeting moment. Not sure if that’s to do with changing conditions or that I’m missing them in the murkier water that prevails these days.

14 thoughts on “Threadfin Jack juvenile

    1. Graham Post author

      Hi Nancy. I hope all is well with you. The adult fish lives in very deep water so if I ever get to see one, it means one or the other of us is in serious trouble!

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