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Anything fishy...as long as it swims or lives underwater. Ichthyology is the scientific study of fish. This includes skeletal fish (Osteichthyes), cartilaginous fish (Chondrichthyes), & jawless fish (Agnatha). An estimated 25,000 species exist, comprising a majority of vertebrates. While a majority of species have probably been discovered & described, ±250 new species are officially described each year. The practice of ichthyology is associated with marine biology & limnology. |
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