Author: Regan, 1903
Remark: The genera <i>Lebiasina</i> and <i>Piabucina</i> are separated mainly by the presence of an adipose fin in <i>Piabucina</i> vs. absence in <i>Lebiasina</i>.  Allocation of species to one or another genus may vary between authors. <i>Piabucina</i> is maintained here pending a taxonomic revision of the subfamily Lebiasininae (Sven Kullander, pers. comm.).  In young specimens this species has a series of dark spots across the body similar to those of <i>L. multimaculata</i>, suggesting a possible relationship, but the spots become less distinct in the adult, those anterior fading and some posterior joining to form bars on <i>P. astrigata</i>.  In addition <i>multimaculata</i> has rows of red spots on the scales whereas on <i>astrigata</i> the spots are orange.  All specimens of this species examined have an adipose fin.  (Ramiro Barriga and Marilyn Weitzman, pers. comm.)  Eschmeyer, 1998:151; Géry, 1977:126.
Comments: Found in small shallow waterways in forested areas.