Amblydoras nauticus is a lovely species of doradid catfish from the Peruvian Amazon. Like their larger and more common cousins, the Raphael catfish, they are heavily armoured and can use their fins to 'grunt' when removed from the water; unlike Raphaels, however, these fish reach a meager 3" in maximum length, making them a much better choice average community aquarium. These nocturnal catfish will generally be quite reclusive during the day, only coming out for food or when the lights go off. They are quite peaceful and will only bother teeny tiny fish that will fit in their mouths.
These are subadults, around 2" long.