
Stickleback
Habitat Specific
Use 'stickleback' to refer to smaller fish found in rivers, lakes, or streams.

While studying the river ecosystem, we observed several sticklebacks.
Species Variation
'Stickleback' can reference different species; some may be unique to specific regions.

The three-spined stickleback is common in North American waters.
Not Always Sharp
Despite 'sharp-pointed' in the definition, not all sticklebacks have prominent spines.

This stickleback variety has less pronounced spines than others.
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