This photo shows a jackdaw on the bank of a canal. We met it on our way on 7 September 2015 to the big AquaHortus aquarium and terrarium exhibition in the botanical garden. All photos of that day are macro lens photos.
The aquariums near the entrance of the exhibition contained tropical fish. In aquarium #1 were South American species: Nannostomus beckfordi; Hyphessobrycon columbianus; and Corydoras arcuatus.
This video is called Colombian Red & Blue Tetra (Hyphessobrycon colombianus).
In aquarium #2 were many cardinal tetras; and Hyphessobrycon bentosi.
Next, an aquarium with blue discus fish. According to an exhibition organiser, they cost 250-300 euros a fish.
In aquarium #6 lived piranhas.
Their colour was more pale than usually. Still stress of being transported to the exhibition, which started only two days ago.
Next, an aquarium with paradise fish, both a male and a female.
One story higher in the botanical garden building were many small aquaria. In some of them were blue shrimps.
In others, killifish. Many of them colourful, like these ones in aquarium #121. Unfortunately, no name tag on the aquarium.
We continued to a hothouse. Many tiger barbs in an aquarium.
In the next hothouse, an aquarium with two tropical seahorse species: Hippocampus erectus from the Americas, and Hippocampus barbouri from south-east Asia.
We left the hothouse, and had to get used to the colder autumn open air temperature. Not a problem for the animals in the aquariums outside. They were North Sea animals, including sea urchins and crabs.
A bit further, there were aquariums with wildlife species living in the canals of Leiden city. Including invasive American crayfish. And various freshwater fish species: eel (both juveniles and older ones). And carp (juveniles, as adult ones would need too big an aquarium).
Also Cottus perifretum.
Perch shared an aquarium with zebra mussels.
Next, an aquarium with three young northern pike.
Then, an aquarium shared by two species: the smallest Dutch fish at the exhibition, three-spined sticklebacks.
And somewhat bigger, but still small, fish: ruffe.
Next, a rudd aquarium.
Finally, a bream aquarium.
As we walked back, pondskaters in the stream in the garden.
On the bank of the pond, a grey heron. Twice, it managed to catch a fish: a roach?
Stay tuned, as there will be more blog posts about the AquaHortus exhibition, especially amphibians, reptiles and plants!