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.
Long before dinosaurs appeared on Earth, fierce predatory fish developed crushing jaws and sharp teeth to survive and diversify in ancient oceans.
Paleontology & Fossils
Sep 13, 2026
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The Hammerschmiede clay pit near Pforzen in the eastern Allgäu is famous for its wealth of finds: Besides fossils of two early anthropoid apes, the remains of numerous vertebrate species have been uncovered in 11.6-million-year-old ...
Ecology
Sep 10, 2026
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60
Researchers have developed an AI-based system that automatically and objectively detects the moment when fish experience loss of equilibrium (LOE) due to temperature stress. The system combines DeepLabCut, a deep-learning ...
Plants & Animals
Sep 10, 2026
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The Danube gudgeon had been considered extinct in the Inn River for more than 100 years. Only a few years ago, the highly endangered species was rediscovered there. Now, researchers at the Technical University of Munich (TUM) ...
Plants & Animals
Sep 9, 2026
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35
Shark products sold at Western Australian fish-and-chips shops are often labeled too ambiguously or, in some cases, mislabeled, leaving consumers unsure which species they are buying, new Murdoch University research shows.
Ecology
Sep 2, 2026
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Stickleback fish can change their social behavior to help them find food in cloudy water, according to a new University of Bristol study published in Proceedings of the Royal Society B.
Plants & Animals
Sep 1, 2026
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10
Dr. Roe Stuart didn't find a taniwha in the unexplored depths of New Zealand's lakes—but they may have found a new species of fish.
Plants & Animals
Sep 1, 2026
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14
For centuries, scientists have been fascinated by the remarkable coordinated movements of flocking birds, swarming insects and schooling fish. Researchers have studied these natural phenomena to understand the rules of interactions ...
Plants & Animals
Aug 26, 2026
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14
Accurately determining fish body size and weight is essential for fisheries resource management and seafood processing; however, measuring large quantities of fish is labor-intensive, and results may vary among operators.
Biotechnology
Aug 20, 2026
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7
If you're a keen angler and regularly catch yellowtail kingfish (Seriola lalandi), you may have encountered instances of the fish's flesh turning mushy and unpalatable once cooked. Some have said it's a bit like trying to ...
Ecology
Aug 19, 2026
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