doradids

Doradids, also known as thorny catfish, are a family of freshwater ray-finned fish belonging to the order Siluriformes. They are native to the Neotropical region, primarily found in South America. This family encompasses a diverse group of fish, characterized by their bony plates, often referred to as scutes, that cover their bodies, providing a form of armor.

The most distinctive feature of doradids is their thorny or spiny appearance, which gives them their common name. These spines are often associated with their dorsal and pectoral fins, and can be used for defense against predators. Their coloration varies widely, ranging from mottled browns and grays to more vibrant patterns, often serving as camouflage within their aquatic habitats.

Doradids inhabit a variety of freshwater environments, including rivers, streams, lakes, and swamps. Many species are nocturnal or crepuscular, meaning they are most active during the night or at dawn and dusk, often foraging for invertebrates, small fish, and other organic matter. Their diet and habitat preferences can differ significantly between species.

Reproduction in doradids often involves parental care, with some species guarding their eggs and fry. The family is of interest to ichthyologists and aquarists due to their unique morphology and behaviors, though many species are not commonly kept in aquariums due to size or specific care requirements.