Little is currently known about the biology of this small fish (1). However, the Thessaly gudgeon may have a life history similar to G. gobio, which matures at two to three years old and spawns between May and June. The eggs of G. gobio hatch after about 15 days (4).
Cyprinidae species usually have quite a diverse diet (3). Like G. gobio, the Thessaly gudgeon is likely to feed on a variety of insects, crustaceans, molluscs and some plant material (4). Members of the Cyprinidae family lack teeth in the jaws, but most have a pair of enlarged bones in the throat which possess structures known as ‘pharyngeal teeth’, which are used to process food (3).
The Thessaly gudgeon is probably largely solitary, but may sometimes gather in small shoals (4).