EXCLUSIVE: What is this fish doing? Watch video


On my recent trip to Grenada in the Caribbean I was filming a moray eel while on a dive and witnessed an interaction between the eel and a fish that was unfamiliar to me. If you know what’s occurring here then please let me know:

[youtube id=”keE20AdlNhw” width=”100%” height=”400px”]

Email me at conservation@scubaverse.com if you know what this fish is up to.

Jeff Goodman

Jeff Goodman

Jeff Goodman is the Conservation editor and also the Underwater Videography Editor for Scubaverse.com. Jeff is an award winning TV wildlife and underwater cameraman and film maker. With over 10,000 dives to his credit he has dived in many different environments around the world.

2 Replies to “EXCLUSIVE: What is this fish doing? Watch video”

  1. In answer to ‘What is this fish doing’ as posted on Scubaverse, I have received the following reply.
    The fish is of the grouper family probably a Coney.
    What is happening is part of group hunting.
    The grouper are very fast fish with excellent vision, but they are not fast enough during the day as their prey see them coming and hide in holes and crevasses fast enough. The groupers like a lot of the piscivores hunt at dusk when they are less conspicuous and can maximize successful strikes to maximize energy gain.

    The morays have poor eyesight and are rather slow and favor night hunting when they have a clear advantage using their advance smell (water analyzes) and can follow the chemical trace of a prey. This is why parrot fish produce a cocoon to sleep so their chemical trace is under cover so to speak.

    Now here is the interesting part when a grouper (or more) join forces with a moray and hunt together during the day.

    The moray investigate holes and crevices. If the fish shoot out to escape the moray, the grouper waiting outside in ambush snap it. If the fish spot the grouper in time and stop, the moray gets it.

    What happen on the video is probably the grouper doing tactile stimulation on the eel to signal his presence and intention and also motivate her to carry on. You should have stick with the eel and probably witness the group hunting.

    I hope this helps.

    Best Regards

    Guy Chaumette


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  2. Ecodiver says:

    I have seen similar behaviour between the Mediterranean morays and the Dusky groupers at the Medes Islands marine reserve on the Costa Brava. I agree with Jeff’s analysis of the reason for the behaviour. We see a similar relationship between Combers (grouper family) and the Common octopus.

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