Eléments pour l'identification des restes crâniens des poissons dulçaquicoles de Belgique et du Nord de la France. 1. Anguilliformes, Gastérosteiformes, Cyprinodontiformes et Perciformes

Ontline drawings of some fish bones are presented. These bones were selected since their shape is so typical that it allows the unambiguous identification of a definite species. Moreover, the authors did compute some regression lines between the total length of some fish species and the length of thier typical bones. Twelve such relationships were calculted for eel and one for the three spined stickleback, the perch and the bullhead. All are highly significant