Some erethistids, such as Conta conta (Hamilton), Laguvia ribeiroi
Hora, L. kapuri Tilak and Husain, and Pseudolaguvia tuberculata (Prashad & Mukerji)
possess a thoracic adhesive apparatus formed by longitudinal skin folds densely covered
with unculi (sensu Roberts 1982), that closely resembles a similar apparatus in the sisorid
genus Glyptothorax. In both groups, the thoracic adhesive disc appears to be an adaptation
to life in fast flowing waters (Hora 1930; de Pinna 1996).