Penguin Tetra
£2.50
Penguin tetra..... Thayeria boehlkei
Once you get past the mouthful of a latin name, Penguins are a slightly quirky addition to your tank.
Their natural swimming position sees them raise their heads about 30 degrees from horizontal, so they do stand out amongst similar looking fish.
Originally from South America, they like softer water for breeding purposes, but are quite happy around a neutral pH, which is what they live in at Gateshead Guppies.
I'd recommend buying at least 10 for the full shoaling effect, and give them a little water flow to play in.