serious tracking

‎Vienna_11.10.20_ 04:38 pm The fish seem to have their own typical movement patterns. These patterns can also depend on the time of day (see movement patterns of forc and 1point below). As you can see in the picture above, there is a separate but accessible compartment in the aquarium. Only two fish entered the separated Continue reading

meaningful signals

I used a lamellophone, pressed it on the glass of the aquarium and played. The fish responded, but their response was equivocal. I felt that a demonstration that fish could learn to categorize stimuli as complex as music, according to a criterion as unnatural as musical genre, not only would show that they extract meaningful Continue reading


‎2. ‎Juni ‎2020, ‏‎01:06 pm [john dow] In the labs fish are fed with different food. Sometimes it is commercial fish food, sometimes they bred food for the fish. I will investigate on that. I remember a funny detail. In one source it was told that the zebra fish in the fish facility in Tübingen Continue reading

no lasting success

According to the manufacturer’s recommendation, the preparation* should be applied over the course of 5 consecutive days and then, as a preventive measure, once a week. At first the treatment with the preparation was quite successful, but then the cyanobacteria developed splendidly again. I decided that the only way to solve the problem was to Continue reading

blue exit

Blue Exit on my desk_10.05.20 I don’t know exactly when the cyanobacteria infestation began. In the laboratory journal I mentioned them for the first time on April 3, 2020. They became a serious nuisance and I spent a lot of time curbing their proliferation. In an aquarium shop, the above preparation was recommended to me Continue reading

housing situation

Vienna:05.05.2020_aquariums in my living room “These findings show how commonly used housing situations may affect the wellbeing of laboratory zebrafish.” Keck VA, Edgerton DS, Hajizadeh S, et al. Effects of Habitat Complexity on Pair-Housed Zebrafish. J Am Assoc Lab Anim Sci. 2015;54(4):378‐383.


At the beginning the aquarium was situated on the floor on a mobile platform. That turned out to be impractical and I built rack to raise it. But I could always see it from my desk, so that I can watch it from there at any time. Subjekte leben in einer subjektiven Wirklichkeit. Diese stellt Continue reading