Fish head dissection is a great practical to show the gas exchange system in fish. Exact fish may vary but usually mackerel. Image shows pack of 5, price is per single head.
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.
Preserved whole fish are also available.
SDS Available: 4% Formalin and Propylene Phenoxetol
Information sheet available: Preserved Specimens