Fish
I recently added 5 golden (Beckford's) pencil fish to my 100 litre aquarium. It had 9 (now 8!) semi-mature corys (Julii and Elegans), and 5 peacock goby, also semi-mature, and 9 or so mature amano. They arrived as a bad mix of 4M and 1F, but there's lots of room, in a well-planted tank, with...