Well, the very old book Exotic Aquarium Fishes by Dr. William T. Innes was once the Bible of the aquarium hobby. Today it is still a must for every aquarists library as a history of this great hobby. It explains the basics of fish care that have not changed since Dr. Innes' day. Some information is very outdated however. It has a section on the most popular fish in the hobby and the basic needs of each. I think everyone should have a library of fish books. Today there is so much information on the internet that it is staggering. Books get out of date quickly sometimes but in most books there is all those little obscure bits of information that other sources gloss over. And then there is the old time joy of reading that the backlit screen can't duplicate. I like books.
It is nice to see people using Martin A Moe's book. Although It is marine, a lot of the DIY in the systems book is really useful.Most people I know who work in Aquariums have that book somewhere.
The DK one Fishmanic posted I saw while I was in Canada and thought it was interesting and full of good info so I picked it up.
If anyone is so inclined the Goldfish varieties and genetics book is well worth a read!
The top photo is more work based ( hence the proteomics handbook) but still part of the fish library.
Hey Lumpfish, can you show the cover of The Manual of Fish Health?
If it's the book I'm thinking of, it's a great one for people here. Has lots of pictures of sick fish as well as microscope pictures of the actual disease organisms. Worth getting if you can find it.
I had an aquarium fish book from 1922, it might be the same one you have posted but a later edition. It showed how they heated the water for tropical fish. They had copper stands with the fish bowl on the top shelf and adjustable shelves underneath. They had candles or oil lamps on the bottom shelves and you adjusted the shelf height to raise or lower the water temperature in the bowl.
There was a picture of a large planted aquarium with a bunch of candles underneath it keeping the water warm, and a row of incandescent globes above it for the plants.