Hopefully your check will reveal nothing except active fry with extended fins and full tummies. It is good to look at them carefully though.

Also be careful that uneaten food is not accumulating on the tank bottom. Perhaps more fish are killed by overfeeding than any other cause.

If there is a bunch of rotting food down there, do you have a gravel vacuum you could use to clean up with? If you just have a siphon tube, try swirling it around that debris and see which you can get out. (A few pond snails are useful here too.)

Do be careful not to siphon up any fry. Since I am clumsy and do siphon fry, I got a white bucket - which is ONLY used for fishy things. The fry are visible and can be returned home. I guess that is called "playing within one's game.: ;)