While ornithology was his main passion, he also studied ichthyology, botany and geology. The department includes sections that study malacology, ichthyology, crustacea, marine invertebrates and worms. His interests while there were anatomy, ichthyology, ethnography, anthropology, and geography. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Thenceforward he became a specialist in marine ichthyology. He was also an advisor in fisheries and ichthyology to the Brazilian Government. He was inspired by Louis Agassiz to pursue his studies in ichthyology. Bloch is best known for his encyclopedic work in ichthyology. Aristotle incorporated ichthyology into formal scientific study. The ichthyology discipline is primarily dedicated to studying the fish of BC. Pliny's documentation was the last significant contribution to ichthyology until the European Renaissance. His interest in ichthyology was sparked in childhood during a vacation in Knysna. He founded a school of hydrobiology and ichthyology in Romania. During his lifetime, Berg was a towering presence in the science of ichthyology. In these conditions, Langsdorf and Tilesius conducted research on climate and ichthyology.