The kissing loach is scavengers which can be also omnivorous. As These are bottom feeders, they aren't usually picky about whatever they consume. Marbled river stingrays are among the list of rarest fish on earth. They spend most in their life buried while in the sand on the sea floor, https://aquariumcleaningservice.health.blog/2024/10/18/how-to-maintain-a-2-feet-aquarium-bigger-fish-tanks/