BIOL 423A

Fish Physiology Lecture

California State University San Marcos · UGRD · Fall 2026

1 section
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Overview of comparative marine and freshwater fish ecology, biology and physiology. Strong focus on comparative physiology, supported by a focus on fishes from various habitats, including local California fishes and fishes that inhabit extreme environments on Earth. Taught through combination of lectures and interactive class activities, providing overview of fish physiology, and links between environment, climate change, and evolutionary history. Includes embryonic development, cardiovascular system, respiration, responses to temperature, responses to hypoxia and anoxia, diversity of fishes, morphology, taxonomy, and anatomy. May not be taken for credit by students who received credit for: BIOL 486-7 or BIOL 423 . Prerequisite(s): BIOL 353 with a minimum grade of C (2.0).

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Class #california_san_marcos-0305Fall 2026UGRD3 credits
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