Are my Yo-Yo loaches healthy?

Abbizx said:

I’ve never owned any loaches before but then I did some research on some and decided to get some yo-yo loaches for my 120L tank. I currently only have two and they both seem happy, they swim around all day and neither of them are aggressive or anything they just seem happy. One of them is bigger than the other and I’ve had them for about a week now. However, I’ve never seen either of them eat anything apart from the going around the tank nibbling on the rocks and plants and was wondering if this is normal to not see them eating? Also the smaller one seems to be a bit smaller than it was when I got it like it looks thinner so I’m a little concerned.
ive attached pictures of them and the one with the red circle is the one I’m concerned about cause it looks too thin to me. And the one with the green circle is the bigger one for comparison.

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PlasticGalaxy said:

They seem healthy enough... Pretty sure they're bottom feeders like most other loaches, so it's normal for them to do that nibbly thing against rocks and wood. They do look kind of thin, though... Mine were always pretty fat, but it may vary from person to person.

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