Goldfish Carassius auratus. Held in net to show the white tubercles on the gill cover of an adult male in breeding condition.
Goldfish ( Carassius auratus). White spot breeding tubercles on the gill covers and leading edge of the pectoral fin show this to be an adult male. Temporarily held in a net.
Size: 5341px × 3561px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No
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