Fish dissection is a great practical to show the gas exchange system in fish. Exact fish may vary but usually mackerel and always longer than 10cm.
All fish is sustainably sourced from the UK.
Preserved in formalin and vacuum packed for storage and delivery. Unopened will last for 6 months in the fridge. Once opened, use immediately or submerge in preserving fluid.
Information sheet available: Preserved Specimens