Synodontis Angelicus: Synodontis angelicus (also known as Polka-dot Synodontis) belongs to the Family Mochocidae (Naked Catfishes). Its adult size (30 cm) makes it ideal for larger tanks with sand bottom and rock caves. It is characterized by the white spots on an overly black body. The tail has black bars on a transparent background. A nocturnal species which, unlike Synodontis decorus is not seen very often during the day.