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Three-spined
Stickleback
Gasterosteus aculeatus
Status
Native to
Newfoundland and Labrador.
Habitat
This is most common stickleback species in Newfoundland. It
can be found in almost all water bodies in the province, and prefers
shallow vegetated areas, usually over mud or sand.
Range
Arctic and
Atlantic drainages inland as far as Lake Ontario in Canada.
Food
Sticklebacks
are voracious predators and will eat any food available to them,
including worms, small drowned insects, fish eggs, crustaceans, and
larvae.
Breeding Biology
Sticklebacks
reach sexual maturity at one year of age, and spawn in fresh water,
generally in June or July. Breeding will occur throughout the summer.
Shallow sandy bottoms are the preferred substrate for nest building.
With nests constructed of small sticks and plant debris. The nest is
held together by mucus secretions from the kidney. Males entice females
into the nest with a zigzag courtship dance. Females may lay as many as
600 eggs on one occasion. Eggs are sticky and form as one large cluster,
and hatch in about seven days.
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