The kissing loach is scavengers which might be also omnivorous. As They can be base feeders, they don't seem to be commonly picky about the things they consume. There are only a few of those fish present in the wild, generally inside the tropical waters in the western Pacific Ocean. https://wallaquariummalaysia.blogspot.com/2024/08/how-to-install-discus-aquarium-setup.html