Dear Olek ,
In support of your work studying fresh water fish and predator free shoals (environments) that support their evolutionary path, I found that Michigan State Professor of Measuements , Kenneth Frank has provided extarordinary illustraions on the invasive Zebra Mussell species.
Further , have you availed your self of work to advance projects that protect he Black Sea . I really was impressed with your Cartography skills .
http://www.eib.org/en/projects/pipelines/?se=6000
Jurgutis Vytautas Daukantas
https://wwlifetimeachievement.com