Ichthyology his pupils continued his ichthyological research. Theophrastus, for example, composed a treatise on amphibious fish. The Romans, although less devoted to science, wrote extensively about fish. Pliny the Elder, a notable Roman naturalist, compiled the ichthyological works of indigenous Greeks, including verifiable and ambiguous peculiarities such as the sawfish and mermaid respectively. Pliny's documentation was the last significant contribution to ichthyology until the European Renaissance. The writings of three sixteenth century scholars, Hippolito Salviani, Pierre Belon, and Guillaume Rondelet, signify the conception of modern ichthyology. The investigations of these individuals were based upon actual research in comparison to ancient recitations.
Ichthyology and GIS the biggest advantages in using GIS is assimilating information and using it to highlight significance or irrelevant data. Use of GIS increases the possible integration of many different types of data into a single usable resource making analysis and interpretation easier as well as increasing management of the data involved. Ichthyology is a field of study that requires active examination of a multitude of areas at the same time for accurate study. GIS programs improve spatial data aspects frequently to accurately represent substrate, habitat, quality or other various factors. This tool enables scientists to access information and share results quickly