How to unravel the long-term memory of cuttlefish: automated video tracking

Did you know that cuttlefish have three hearts, have such an advanced vision that they can see what’s behind them, can count to five.

Time is of the essence in fish studies

You recently moved into your new house. How do you feel? How do you act in this new space? The answers may depend on how long you have lived there…

The accuracy of measuring fish aggression by using mirror tests

To examine the response of cichlids to their mirror image, Balzarini et al. used three sympatric species from Lake Tanganyika and did the mirror test for measuring aggression.

Making the impossible possible – Tracking under water in the dark

European eels (Anguilla anguilla) have a life cycle in which both larvae and adults travel incredible distances. The eggs hatch in the Sargasso Sea near North America and the larvae swim all the way to Europe.

To mate or not to mate? Females are less choosy when males are rare

Having a choice for a mating partner is extremely important for females, so they can be critical in choosing which male to mate with.

Zebrafish research: behavioral differences between wild-type strains

Often in animal research, animals with a certain genetic alteration are compared to a “wild-type”. One might assume that there is no differences between wild-types, but many different strains of wild-type animals are used.