This video from Finland says about itself:
July 19, 2010
The male stickleback guards something. I think there was a nest somewhere. Though he may protect his fry. Video was written at the Gulf of Finland in July.
Fish ladders for sticklebacks
Posted on February 12, 2013
For salmon and trout they existed already, fish ladders to pass dams. Threespine sticklebacks need ladders with much smaller steps. Almost 20 years ago, Forestry Texel thought about this. Through these fishways threespine sticklebacks can swim from the Wadden Sea into the Moksloot to lay their eggs in the fresh water of the Dunes of Texel. A marine threespine stickleback is twice as long and five times as heavy as a stickleback which has always lived in fresh water. Large fish lay more eggs, and are also better food for birds like spoonbills.
- The slower you grow, the longer you live, say Glasgow University scientists (dailyrecord.co.uk)
- New wasp species discovery on Texel island (dearkitty1.wordpress.com)
- Sunfish beaches on Dutch island (dearkitty1.wordpress.com)
- The 10 most recent animal extinctions in Canada (macleans.ca)
- Dutch humpback whale in Texel harbour (dearkitty1.wordpress.com)
- Dutch humpback whale near Texel, update (dearkitty1.wordpress.com)
- Rare derbio fish in North Sea (dearkitty1.wordpress.com)
- Delayed Growth in Childhood Linked to Longer Lifespan (medicaldaily.com)
- Humpback whale beaches on Dutch island (dearkitty1.wordpress.com)
- Freshwater fish of Wadden Sea islands (dearkitty1.wordpress.com)