This picture was taken during a fieldtrip to Lake Tanganyika in Zambia during the second Covid wave in 2020. Lake Tanganyika is one of the oldest and deepest freshwater lakes in the world. While snorkelling or diving in the lake, it is sometimes easy to forget that you are not in the sea but in a freshwater lake in the middle of continental Africa. Everywhere are colourful fishes, big snails, mussels and sponges. This little cichlid fish decided that we could be a threat and hid in an abandoned snail shell. At least, it thought that it was safe. Luckily for the fish, we needed other cichlid species for our study.
<a href="//commons.wikimedia.org/w/index.php?title=User:Cethuyghe&amp;action=edit&amp;redlink=1" class="new" title="User:Cethuyghe (page does not exist)">Charlotte E. T. Huyghe</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>