Congratulations John!
Great Crested newt larvae.
(Photographed under Licence)
These often over winter as larvae. Done in a complicated tank set up designed for freshwater stuff. They are the only newt larvae with spots - so quite easy to ID.
Great Crested larvae for some reason are quite hard to move around - unlike the other two species we have in the UK
Nikon D7100
Nikor macro 40mm.
Printed backdrop.
Artificial light from above./ fill flash
70% of full frame.
PP in PSP7/image guru.
Cheers
JohnR