DENDROLOGY

Detailed explanation-1: -ichthyology, scientific study of fishes, including, as is usual with a science that is concerned with a large group of organisms, a number of specialized subdisciplines: e.g., taxonomy, anatomy (or morphology), behavioral science (ethology), ecology, and physiology.

Detailed explanation-2: -Ichthyology is the scientific study of fish. It is a branch of biology, which is a branch of science that deals with all living things. Ichthyology is concerned with fish species, particularly the Chondrichthyes (cartilaginous fish), the Osteichthyes (bony fish), and the Agnatha (jawless fish).

Detailed explanation-3: -It is a multidisciplinary science, which draws on the disciplines of limnology, oceanography, freshwater biology, marine biology, meteorology, conservation, ecology, population dynamics, economics, statistics, decision analysis, management, and many others in an attempt to provide an integrated picture of fisheries.