This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FMIB Glochidium .jpeg check categories September Glochidium immediately after it is hatched ad adductor muscle by 'byssus' cord sense organs sh shell after it has been on the fish for some weeks ad ad anterior and posterior adductors al alimentary canal au auditory vesicle br branchiae foot mt mantle Balfour Subject Unionidae