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
Category: behaviour
feeding Daphnia
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.
dreaming?
Vienna_11.10.20_04:42 pm joe blow seems to be a surface dweller. But remaining in one place motionless, as seen in the video below, is highly unusual even for joe blow.
on the trails
11.10.20_04:45 pm On the trails of 1point at different dates and times. Remark: In February and March the fish were in another aquarium with no separate compartment. (compare housing situation and serious tracking) 3:03 min tracking (with the camera) at 32 x speed + selected moments in different speeds.
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
companions
Vienna 15.09.20_04:01pm In the pet shop zebrafish are kept in community with other fish species. One could als say that they coexist. I watched them for while to see if they interact with each other and asked the shop owner if they do. They don’t. It seems like they don’t exist for each other. Siamese … 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
a different picture?
Vienna_26.07.20_03:28 pm john doe is observed by another fish. A different perspective, a different picture. I think that the fish on the image is john doe. The photo is blurry and out of focus. But an analysis of the stripes and the fact that he swimms near the bottom in the seperate chamber hints to … Continue reading
preferred domicile
heabea still* has her preferred domicile in the separate chamber. *see: personal preferences She accepts john doe there. He mostly stays close to the ground, wheras she tends more to the surface. She still likes to attack fork through the plexiglass [don’t know if ‘attack’ is the right expression – may be it’s more teasing] … Continue reading
how to catch
I fed mosquito larvae from a sieve and learned that the fish easily get into the sieve. Next time I know how to catch them if I want to move them to another tank.
pursuit
Vienna_23.07.20_11:28 am bent is chased by forc, which he does quit often, at least this can be observed since a couple of days.
visiting card
visiting cards I quickly designed and printed a card. The weather was bad the next day. Even so, two people were sitting outside. I gave the assistant the business card I just designed and a catalog, and I promised that I would send a more detailed description of my intentions.