The kissing loach is scavengers which can be also omnivorous. As These are base feeders, they don't seem to be usually picky about what they take in. It is possible to identify them by their coloration. They've white, reddish, or pink on the head, although the neck is vivid purple. https://aquariumonlinestore.finance.blog/2024/11/23/how-to-bring-healing-energy-in-your-home-with-an-aquarium-in-malaysia/