Not much is known about the behaviour of the apron, but it is believed to behave in a similar way to the closely related streber (Zingel streber), which lives in small colonies or schools of several individuals that have territories scattered through the habitat (4). The apron lurks on the bottom of the river bed during the day, coming out to feed at twilight (6). Its diet consists of different types of invertebrates, consuming flies and midges in winter, and mayflies and caddisflies during the rest of the year. Most of the feeding and growth of this species occurs during the spring and summer (7).
The apron is a relatively short lived species, surviving for just three and a half years. This species attains sexual maturity at two to four years of age (6). It usually reproduces only once, but can reproduce twice in a lifetime (1). The apron spawns in the deeper parts of riffles, laying its small, extremely adhesive eggs onto the gravel stream floor. The eggs hatch within two weeks and the larvae feed on plankton near the surface until they reach a length of about two and a half centimetres. They then move to deeper water (5).