Usar "loach" en una oración

1. There was this one occasion –oh, the humiliation and shame at the mere thought of it! - when he made me dress up as an orange-finned loach, and tried to pump water up my-”

2. Behind him, each hanging its head, walked the old bitch Kashtanka, and the dog Viun, so named because of his black coat and long body and his resemblance to a loach