#fishreservation
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owinleiden.bsky.social
Such clarity in the fish reservation! Lots of distinguishable individuals, due to their size, gender, behaviour and markings.
Made viz with the CanalCam Leiden: onderwaterinleiden.nl/mediafotofil...
#citizenscience #freshwater #fishreservation @leidencity.bsky.social @knnv2ehandsboek.bsky.social
May 13, 2025 at 10:06 AM
owinleiden.bsky.social
full body treatment here in #Leiden, in the fishreservation! From april-juni, from perch, rudd an roach fry. And footmassages from adult tench, I kid you not!
September 3, 2025 at 10:33 PM
owinleiden.bsky.social
Does anyone have a suggestion what this growth on the rudd's throat area can be?
The footage was caught on the CanalCam Leiden, in the NL.
#fishreservation #CanalCam #Leidencity

youtu.be/93pSjh5XuGk?...
July 1, 2025 at 10:04 PM
owinleiden.bsky.social
Same here, in the NL! It st even came almost uncomfortably near - I didn't know eel were so inquisitive! m.youtube.com/watch?v=Pk2E...

#myswim #urbannature #eel #Leidencity @gemeenteleiden.bsky.social #fishreservation @knnv2ehandsboek.bsky.social @naturalis.bsky.social @drfishsg.bsky.social
Paling in regenbui
YouTube video by Visreservaat Leiden
youtu.be
August 24, 2025 at 2:40 AM
canalcam.bsky.social
if y'all like CCC, try the #CanalCamLeiden, in an urban canal in a #fishreservation in the Netherlands! Usually clearer than the famous Utrecht Fishdoorbell #visdeurbel . With individually recognizable tench, bream, rudd, pike etc. Enjoy!
www.onderwaterinleiden.nl/mediafotofil...
#LeidenCity
July 4, 2025 at 9:28 PM
canalcam.bsky.social
We're hoping to snap some beautiful images, too, next year. Here's the purchase list of our CanalCam contraption. To be assembled this winter 😉
#CanalCam #freshwater #fish #citizenscience #Leiden #fishreservation #underwaterinleiden #volunteerwork
December 6, 2024 at 12:14 AM
canalcam.bsky.social
News from the fishreservation in #Leiden, NL: healthy waters healed wounds on a tench within 5 weeks. Lots of 'blue safaris' with students, conference-goers and locals. Grebe shows a caught invasive crayfish on the CanalCam Leiden and frisky tench due to warming waters...
mailchi.mp/onderwaterin...
a grebe with a Louisiana crayfish in its beak, in front of the CanalCam Leiden a rudd, a silver cyprinid fish with red fins a perch; a predatory fish with reddish belly fins and vertical pyjama stripes over its body, usually 5 black stripes on a greyish-white body. It has two dorsal fins two tench
July 23, 2026 at 3:33 PM
owinleiden.bsky.social
Even though I don't know them, I feel like I know them! Such distinctive dorsal fins and patches. Thanks for sharing!
We study the same in our fish/reservation in #Leiden, NL.
onderwaterinleiden.nl/mediafotofil...
#smoelenboek
a Dutch newspaper article describes how many fish and other species have been recorded by the CanalCam, a livestream in the fishreservation in Leiden the tail of a big fish, pinkish grey and consisting of two big lobes, is photobombing this screenshot taken by the CanalCam, a livestream in an urban canal in Leiden, the Netherlands a greyish tench, a 65 cm long fish, part of the carp family, is nose down feeding in front of the CanalCam. Its large pectoral fins are spread wide, to give the animal some thrusting power to search deeper into the sediment for macrofauna. The city canal in the background is greenish blue and quite clear. a tench, a carp-like fish, known as Touché, in front of the CanalCam: that's a livestream camera in an urban canal in the fishreservation in Leiden. This individual has three torn up fins, of which the dorsal and anal fin are visible in the picture. the water is greenish blue, the fish a dark brown/grey color.
October 14, 2025 at 6:11 PM