[1] The long-fingered bat lives in limestone areas, preferably wooded or shrubby terrain near flowing water.

It is a water-oriented carnivore, hunting fish, aquatic insects and other small invertebrates, such as ostracods and water fleas.

Due to its "trawling" behaviour, it apparently prefers rivers wider than 10 m (33 ft) with high amounts of riparian vegetation that prevent the water from becoming too disturbed by wind.

Birth occurs in mid to late June, with only one pup born, which is weaned after approximately four to six weeks.

[citation needed] The three main threats to all species of bats are roost disappearance and disturbance, altering of foraging areas, and pesticides.

The long-fingered bat is largely affected by the first two threats, with tourism being one of the leading causes of the descending population trend.

The long-fingered bat strictly depends on underground shelters and most localized extinctions have been caused by disturbance of breeding roosts.

The main prey of M. capaccinii, chironomids, accumulate toxic compounds which can lead to death in these bats.

Long-fingered bats are included in Annex II and IV of the EU Habitats and Species Directive, meaning they need special measures for conservation.