Fish, as a topic, encompasses the study of aquatic, primarily gill-breathing vertebrates within ichthyology, integrating anatomy, physiology, ecology, evolution, and systematics across jawless (Agnatha), cartilaginous (Chondrichthyes), and bony (Osteichthyes) lineages. Research topics include osmoregulatory strategies in freshwater and marine environments, hydrodynamics of locomotion, sensory biology (e.g., lateral line and electroreception), reproductive modes, life-history strategies, and trophic interactions within aquatic food webs. Fish also serve as model systems in developmental biology, genomics, ecotoxicology, and conservation biology, with topics addressing population dynamics, stock assessment, habitat degradation, climate-driven distribution shifts, and biodiversity patterns in marine and inland waters.
Eating fish may well be good for you, but it carries a hidden risk of exposure to so-called "forever chemicals." A new study published in the journal Science has revealed that the global seafood trade is acting as a massive ...
Whether a caught fish is released back into the water or removed for consumption depends on more than just the fish species and size. Researchers from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) ...
Plants & Animals
Dec 18, 2025
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A research team led by Prof. Zhu Min—a member of the Chinese Academy of Sciences (CAS) and affiliated with the CAS Institute of Vertebrate Paleontology and Paleoanthropology (IVPP)—has identified a new species of fossil lungfish ...
Evolution
Dec 17, 2025
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In the aftermath of historically severe wildfires in 2020, a study of Cascade Range watersheds found that stream vertebrates are doing surprisingly well, highlighted by flourishing fish populations.
Plants & Animals
Dec 16, 2025
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Internal clocks can tick very differently. While some people are most productive in the morning, others are only active later in the day or at night. This phenomenon is known in science and medicine as chronotype.
Plants & Animals
Dec 8, 2025
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Flapper skate (Dipturus intermedius), the world's largest skate species measuring over two meters in length, live hidden on the rugged seabed around Scotland. Their life in the darkness, deep underwater, makes it extremely ...
Plants & Animals
Nov 28, 2025
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New research has revealed the critical role of river-floodplain connectivity in sustaining fish species diversity on the floodplain of the Martuwarra Fitzroy River in the Kimberley region of Western Australia.
Plants & Animals
Nov 26, 2025
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In a study by Dr. Martin Ebert and Dr. Steve Etches published in the Zoological Journal of the Linnean Society, the osteology and systematic position of a new species of fossil fish, Brachyichthys manselii comb. nov. was ...
About 360 million years ago, the shallow sea above present-day Cleveland was home to a fearsome apex predator: Dunkleosteus terrelli. This 14-foot armored fish ruled the Late Devonian seas with razor-sharp bone blades instead ...
Evolution
Nov 20, 2025
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In a study appearing in Fossil Record, researchers Martin Ebert and Martina Kölbl-Ebert analyzed the remains of a unique fossil type: the decapitated head of Aspidorhynchus, with its gastrointestinal tract (guts) still attached. ...
