How do fish get in overflow? Over or through?

[bubba60tackle]

I have a 5 year old clown that has gotten in my overflow 3 times now. Tank is an Aqueon 210 with dual over flows. I have glass tops on it. I want to do something to stop this from happening but is he squeezing through the grate? Or somehow managing to jump and make it between the 1/2” gap between the glass tops and the top of the overflow? Any thoughts on how they typically get back there? Both seem almost impossible.

 

[Dread Pirate Dave]

Hard to say but my first guess was going over the top. You can try these, perhaps.

Mega Overflow Lid (aqueon) (oceanic) - Etsy

This Aquariums & Tank Decor item by Cthulhu3D has 28 favorites from Etsy shoppers. Ships from Tyler, TX. Listed on Aug 4, 2025

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