Gurnard is a fish of the triglid family. It represents several fish species, including piper gurnard and Prionotus.
Gurnards share the ability to produce, with the help of their swim bladder, a kind of audible rumbling when they are injured or when they are taken out of the water. Gurnard also has a large, armoured pyramidal head and pectoral fins with sideburns, allowing them to walk at the bottom of the water. Its colour ranges from gray to red, to  pinkish hues. Gurnard spawning period lasts from May to August.