Hi everyone,
I'm a neurosciences PhD student in France studying cognition in both birds and fish. So far we have been working with cichlids, hoping to find complex behaviors similar to what has been found in certain birds (like corvids and parrots), but we haven't had any luck. So we're on the lookout for better model species of fish.
Given that certain species of wrasse use "pseudo-tools" (anvils), and as this could be a sign of advanced cognitive abilities, we have been thinking about using wrasse for our behavioral studies.
In particular, we are interested in the Thalassoma and Choerodon genus, with a preference for Choerodon.
Do any of you have experience maintaining Choerodons, and if so, do you have any tips?
Do you find them to be "intelligent" fish? Have you observed interesting behaviors, like the manipulation of objects present in their tanks? Perhaps even the use of rocks in their tanks as anvils to crush food pellets or shells? Are they stressed fish? We need to be able to interact with them so if they are easily stressed that could be an issue.
Part of the experiments we'd like to try are anvil-choice: can the context around a rock influence their choice of anvil (for instance, the presence of shell debris around a rock could indicate that it's a good anvil and thus increase the probability of it being chosen as an anvil over a similar rock), and we'd also like to try "true tool use", to see if they can manipulate an object directly in order to access a food reward.
Sorry for the long post; I've had a great time browsing the pictures posted in this thread! :)
I'm a neurosciences PhD student in France studying cognition in both birds and fish. So far we have been working with cichlids, hoping to find complex behaviors similar to what has been found in certain birds (like corvids and parrots), but we haven't had any luck. So we're on the lookout for better model species of fish.
Given that certain species of wrasse use "pseudo-tools" (anvils), and as this could be a sign of advanced cognitive abilities, we have been thinking about using wrasse for our behavioral studies.
In particular, we are interested in the Thalassoma and Choerodon genus, with a preference for Choerodon.
Do any of you have experience maintaining Choerodons, and if so, do you have any tips?
Do you find them to be "intelligent" fish? Have you observed interesting behaviors, like the manipulation of objects present in their tanks? Perhaps even the use of rocks in their tanks as anvils to crush food pellets or shells? Are they stressed fish? We need to be able to interact with them so if they are easily stressed that could be an issue.
Part of the experiments we'd like to try are anvil-choice: can the context around a rock influence their choice of anvil (for instance, the presence of shell debris around a rock could indicate that it's a good anvil and thus increase the probability of it being chosen as an anvil over a similar rock), and we'd also like to try "true tool use", to see if they can manipulate an object directly in order to access a food reward.
Sorry for the long post; I've had a great time browsing the pictures posted in this thread! :)
