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WP10336
Three-spined
Stickleback
(
Gasterosteus aculeatus
)
male
standing
guard
as
young
sticklebacks
emerge
from
the nest. .
WP10336
Three-spined Stickleback (
Gasterosteus aculeatus
) male standing guard as young sticklebacks emerge from the nest. .
Freshwater fishes
River fishes
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