I’ll give the strange meme a try:
1. Grab the nearest book.
2. Open the book to page 23.
3. Find the fifth sentence.
4. Post the text of the sentence in your journal along with these instructions.
The nearest book at this moment is Axelrod and Emmens’ Exotic Marine Fishes.
A broad shallow tank is best as it gives the greatest area for the exchange of gases at the surface of the water, but such a tank is not very nice to look at.