 in the Black Sea had a total maximum length of 35 cm.⁠ For Ak & Genç it seems to be clear that many factors contribute to the varying size of "Trachinus draco" like “temperature, salinity, food (quantity, quality and size), sex, time of year and stage of maturity”.⁠

"Trachinus draco" is a so-called ambush predator that digs itself into fine sand during daytime only with its eyes and the tip of the dorsal fin exposed.⁠ There it lurks until prey emerges which is then attacked by the predator in a swift and sudden manner.During the night time the greater weever is believed to swim around freely, even pelagically.This thesis is indirectly supported by the finding, that prey in the stomach of "T. draco" which were caught during daytime was already mostly digested.