Stone Catfish Stone catfish, also called the dwarf anchor catfish for the shape of their body, are small scavengers that will do well with any fish that cannot eat them. These are great nano tank and planted tank additions as they will not eat fancy shrimp and other smaller tank mates. Scientific Name: Hara Jerdoni Origin: India Max Size: 1 inch Diet: Scavenger Shipping Size: Approx. 3/4 inch