👉 Ichthyology is a branch of zoology that deals with the study of marine invertebrates, including fish and other aquatic animals. It focuses on their biology, morphology, anatomy, ecology, behavior, and conservation status. Ichthyologists use various methods to understand the diversity and abundance of these creatures, as well as the ecological roles they play in marine ecosystems. The term "ichthys" comes from the Greek word "Ichthys," which means fish or fishlike animal. It