Large hole

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There is time my Jag moved all gravels to 1 side of his tank and other half is sparkle spotless clean bottom...and they are spawned there :)
 
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I've kept an Oscar who did that all time. My niece has a Midas who does the same or worse.

I used to think it was strange since both were/are the only fish in the tank, but I guess it's just instinctive to do it in case a potential mate somehow appears.
 
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I've kept an Oscar who did that all time. My niece has a Midas who does the same or worse.

I used to think it was strange since both were/are the only fish in the tank, but I guess it's just instinctive to do it in case a potential mate somehow appears.
I don't think this behavior is strictly mating related, I think it is partly just so the fish feel comfortable. In the wild, they need to watch out for predators, and what place better to hide than a hole you dug ? I find my fish often dig their "holes" in a corner or near/under wood and rocks, probably to hide from larger fish or air-breathing predators.
 
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I don't think this behavior is strictly mating related, I think it is partly just so the fish feel comfortable. In the wild, they need to watch out for predators, and what place better to hide than a hole you dug ? I find my fish often dig their "holes" in a corner or near/under wood and rocks, probably to hide from larger fish or air-breathing predators.

+1

Mating, feeding, territoriality, defense... all play a role. Cichlids are notorious diggers in general.
 
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That's a reasonable and logical alternative. It could be not only an alternate, but perhaps the sole reason. But tbh, I can't think of a way that it can be determined why they do it. In both conditions, it's unnecessary and done in single specimen tanks.
 
Geophagus sift sand to find food, which is why most people keep them on that instead of gravel. It's commonplace for cichlids to do this apparently
 
My little Keyhole Cichlids dig little pits in the sand, and sleep in them.
 
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