Vienna_31.10.2020 In addition to the fact that brine shrimp [Artemia] are a widely used food item for small or larval fish and crustaceans (see brine shrimp), Artemia provides a unique example of how to develop a strategy in dealing with critical conditions needed for survival. The Artemia model depicts adaptation as a complex response to … Continue reading
Vienna_27.10.2020 I have the feeling that the fish are very fond of Daphnia [water fleas]. Even Heabea, who normally does not leave her separate chamber, came out to hunt the water fleas.
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
I bought new fish food the other day. It is not as colourful as the old one and I smell a little more herbaceous notes, a little more freshness. But I am even not sure if I could distinguish both in a blind test. I will try that later. First impression: the fish spit out … 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
26. Mai 2020_08:18 am The fish have not [yet?] learned about things which are translucent but solid. The medium they live in is translucent but never solid in their natural environment. They try to reach the food flakes by pelting the plexi glass. It seems that they find the passages [see image ‘alternative habitation‘] only … Continue reading
I wanted to train the fish to swim through a tube and started with a short piece 60 mm long, 35 mm in diameter. They showed no particular interest. Only when I charged it with mosquito larvae they passed through. Each animal faces a small number of objects within its living environment with which it … Continue reading