growth mark

growth mark
a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth ring or growth zone

Dictionary of ichthyology. 2009.

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Look at other dictionaries:

  • growth ring — a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth mark or growth zone …   Dictionary of ichthyology

  • growth zone — a layer of material deposited on a scale or bone which reflects the growth of a fish. Also called growth mark or growth ring …   Dictionary of ichthyology

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