23 January 2026

Surprisingly handsome flatworms

I mentioned before that we have a fish tank at work. I wasn’t very excited about the fish, but the tank also contained invertebrates. These surely floated my boat! 

If you look now at the pictures I took back then, it’s a very bare landscape (seascape). But the invertebrates have grown, and we have had new acquisitions. It looks very lively now! Lush with corals and polyps and whatnot. 

When I recently had a look I noticed some red specks. I had no idea what they were, but by coincidence Craig, the brain behind the fish tank, just approached. He did know what they were. He said they were flatworms! I always imagine these to be bigger. These specks were more or less couscous sized. I couldn't see them clear at all.

The full tank

Notice the dark red bits


A few days later I made sure to have my hand lens with me, and I had another look. A whole world opened up for me! With the lens, I could make out their shapes. There is a lot of detail in the little things.

Individual wormies 

I don'I don't really know what I was looking at; they seem to have a bellybutton and a tail, but that is projection. Just that I could have a good look at them was enough for me. When people saw me do that, they wanted to have a look as well, and they were impressed too.

It seems that these little things are a bit of a plague, and they will have to be removed. There is a massacre on the horizon! Oh dear. I'm emotionally involved now…

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